SC 2811

3 Heat/2 Cool Auto or Manual Changeover Hardwired

Non-Programmable Electronic Thermostat

• Configurable • Three Stage Heat / 2 Stage Cool Systems • Multi-Stage Heat Pump Systems • Backlit Display • Field Temperature Calibration • Filter Check • Status Indicator Light • Relay Outputs (minimum voltage drop in thermostat) • Ideally Suited for: – Residential (New Construction/Replacement) – Light Commercial

Installation, Operation & Application Guide For more information on our complete range of American-made products – plus wiring diagrams, troubleshooting tips and more, visit us at www.icmcontrols.com

Table of Contents Parts Diagram..............................................................................................................................1 Specifications...............................................................................................................................2 Important Safety Information......................................................................................................2 Package Contents/Tools Required................................................................................................2 To Remove Existing Thermostat.................................................................................................3 To Install Thermostat...................................................................................................................3 Remote Sensor Installation (Optional).........................................................................................5 Terminal Designator Descriptions................................................................................................6 SC2811 Output Chart..................................................................................................................6 Wiring Diagrams...........................................................................................................................7 Wiring Diagram Conversions......................................................................................................10 Configuration Mode....................................................................................................................22 Testing the Thermostat.............................................................................................................26 Mode of Operation.....................................................................................................................27 Operating Modes.......................................................................................................................28 Troubleshooting.........................................................................................................................29

Parts Diagram

S1 S2 W1 O/B

Y1 W2 Y2

W3

R12



Specifications Electrical rating: • 24 VAC (18-30 VAC) • 4 amp maximum total load • 1 amp maximum per terminal Temperature control range: 45°F to 90°F (7°C to 32°C) Accuracy: ± 1°F (± 0.5°C) System configurations: 3-stage heat, 2-stage cool, heat pump, gas, oil, electric Timing: Anti-short Cycle: 5 minutes Backlight Operation: 13 seconds after mode change or button press Terminations: R, C, W1/O/B, Y1, W2, Y2, G, W3, S1, S2

Important Safety Information WARNING!: Always turn off power at the main power supply before installing, cleaning, or removing thermostat. • This thermostat is for 24 VAC applications only; do not use on voltages over 30 VAC • Do not short across terminals of gas valve or system control to test operation; this will damage your thermostat and void your warranty • All wiring must conform to local and national electrical and building codes • Do not use air conditioning when the outdoor temperature is below 50 degrees; this can damage your A/C system and cause personal injuries • Use this thermostat only as described in this manual

Package Contents/Tools Required Package includes: SimpleComfort® 2811 thermostat on base, thermostat cover, wiring labels, screws and wall anchors, Installation, Operation and Application Guide Tools required for installation: Drill with 3/16” bit, hammer, screwdriver



To Remove Existing Thermostat ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat. 1. Turn off power to the heating and cooling system by removing the fuse or switching the appropriate circuit breaker off. 2. Remove cover of old thermostat. This should expose the wires. 3. Label the existing wires with the enclosed wire labels before removing wires. 4. After labeling wires, remove wires from wire terminals. 5. Remove existing thermostat base from wall. 6. Refer to the following section for instructions on how to install this thermostat.

To Install Thermostat ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat.

IMPORTANT: Thermostat installation must conform to local and national building and electrical codes and ordinances. Note: Mount the thermostat about five feet above the floor. Do not mount the thermostat on an outside wall, in direct sunlight, behind a door, or in an area affected by a vent or duct.

1. Turn off power to the heating and cooling system by removing the fuse or switching the appropriate circuit breaker off.



To Install Thermostat (continued) 2.

To remove cover, insert and twist a coin or screwdriver in the slots on the sides of the thermostat.

3.

Put thermostat base against the wall where you plan to mount it (Be sure wires will feed through the wire opening in the base of the thermostat).

4.

Mark the placement of the mounting holes.

5.

Set thermostat base and cover away from working area.

6.

Using a 3/16” drill bit, drill holes in the places you have marked for mounting.

7.

Use a hammer to tap supplied anchors in mounting holes.

8.

Align thermostat base with mounting holes and feed the control wires through wire opening.

9.

Use supplied screws to mount thermostat base to wall.

10. Insert stripped, labeled wires in matching wire terminals. See “Wiring Diagrams” and “Wiring Diagram Conversions”sections of this manual (Pages 7-21).

CAUTION!: Be sure exposed portion of wires does not touch other wires.

11. Tighten screws on terminal block. Gently tug wire to be sure of proper connection. Double check that each wire is connected to the proper terminal. 12. Seal hole for wires behind thermostat with non-flammable insulation or putty, or use an ICM insulated wall plate (ACC-WP01). 13. Replace cover on thermostat by snapping it in place. 14. Turn on power to the system at the main service panel. 15. Test thermostat operation as described in “Testing the Thermostat” (Page 26).



Remote Sensor Installation (Optional) 1. Remove cover from remote sensor housing. 2. Select an appropriate location for mounting the remote sensor. 3. Mount remote sensor unit using hardware provided. 4. Install two wires between remote sensor and thermostat (use shielded cable). • Wire 1 should run between the S1 terminal on the thermostat and the S1 terminal on the remote sensor • Wire 2 should run between the S2 terminal on the thermostat and the S2 terminal on the remote sensor 5. Disable the main sensor (R12) on the thermostat by cutting it from the circuit board.



Terminal Designator Descriptions R – 24 VAC hot C – 24 VAC common W1/O/B – Configurable W1 – 1st stage heat for non heat pump systems O – cool active reversing valve B – heat active reversing valve Y1 – 1st stage cool, 1st stage heat for heat pumps W2 – 2nd stage heat for non-hp, 3rd stage heat for 2 compressor heat pump systems Y2 – 2nd stage cool for 2 compressor systems, 2nd stage heat for 2 compressor heat pump systems G – Fan W3 – 3rd stage heat for non-hp systems

SC2811 Output Chart 1ST Cool

2ND Cool

1ST Heat

2ND Heat

3RD Heat

Heat/Cool

Y1,G

YI,Y2,G

W1,G*

W1,W2,G*

W1,W2,W3,G*

Heat Pump (One Compressor)

Y1,G,O

Y1,G,O

Y1,G,B

Y1,W2,G,B

Y1,W2,W3,G,B

Heat Pump (Two Compressors)

Y1,G,O

Y1,Y2,G,O

Y1,G,B

Y1,Y2,G,B

Y1,Y2,W2,G,B

Emergency Heat (Heat Pump Only)

N/A

N/A

W2,G

W2,W3,G

N/A

* G not energized when configured as a gas/oil system The SC2811 thermostat is configurable for all systems. The configuration directly affects the outputs. Use the output chart to correctly configure and wire the thermostat to your system.



Wiring Diagrams

First Heating Control First Cooling Control

First Cooling Control Second Heating Control

Second Cooling Control

Second Cooling Control

Third Heating Control





First Heating Control

First Heating Control

Second Heating Control

Second Heating Control

Third Heating Control

Third Heating Control

Single Compressor

Two Compressors

Reversing Valve

Reversing Valve

Compressor

Compressor 1

2nd Stage Heat

Auxilliary Heat Compressor 2

3rd Stage Heat



Wiring Diagram Conversions SimpleComfort® 2811 Electronic Thermostat Conversion to: Carrier Split Stream Condensers and Heat Pump Systems

Note 1: E terminal on PCB capped Note 2: L terminal on PCB capped

Carrier Split System Low Voltage Terminal Board

R C O Y W2 G E L W3

10

SC 2811 Electronic Thermostat R

C

W1 O/B

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED

(capped) (capped)

Y1 W2 Y2

G

W3

SimpleComfort® 2811 Electronic Thermostat Conversion to: Coleman 3000 Series Heat Pump Systems

Note 1: E terminal on PCB capped Note 2: L terminal on PCB capped

Coleman 3000 Low Voltage Terminal Board

R X B Y W2 G E L

SC 2811 Electronic Thermostat R

C

W1 O/B

Y1 W2 Y2

G

W3

24 VAC, return 24 VAC, common Reversing valve (heating mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED

(capped) (capped)

W3

11

SimpleComfort® 2811 Electronic Thermostat Conversion to: ComfortMaker CYC Series Heat Pump Systems

Note 1: W2 terminal on PCB capped Note 2: X terminal on PCB capped

ComfortMaker CYC Low Voltage Terminal Board

R

12

C O Y W1 G W2 X

SC 2811 Electronic Thermostat R

C

W1 O/B

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit Outdoor thermostat Defrost sensor

(capped) (capped)

Y1 W2 Y2

G

W3

SimpleComfort® 2811 Electronic Thermostat Conversion to: Heil-Quaker 867.814 Series and PH50 Series Heat Pump Systems

SC 2811 Electronic Thermostat R

Heil-Quaker 867.814 and PH50 Low Voltage Terminal Board

R C O Y W1 G W2

C

W1 O/B

Y1 W2 Y2

G

W3

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit (sequencer 1) Fan contactor circuit 3rd stage heating circuit (sequencer 2)

13

SimpleComfort® 2811 Electronic Thermostat Conversion to: Payne Reliant and Endura Model Heat Pump Systems

Note 1: E terminal on PCB capped Note 2: L terminal on PCB capped

Payne Reliant and Endura Low Voltage Terminal Board

R C O Y W2 G E L W3

14

SC 2811 Electronic Thermostat R

C

W1 O/B

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED 3rd stage heating circuit

(capped) (capped)

Y1 W2 Y2

G

W3

SimpleComfort® 2811 Electronic Thermostat Conversion to:

Rheem/Ruud: -PGB, -PFA, -PCB, -PLA, and -PKA Series Heat Pump Systems

Low Voltage Terminal Board

Rheem/Ruud: -PGB, -PFA, -PCB, -PLA, and -PKA

Note 1: E terminal on PCB capped Note 2: L terminal on PCB capped R X B Y W2 G E L

SC 2811 Electronic Thermostat R

C

W1 O/B

Y1 W2 Y2

G

W3

24 VAC, return 24 VAC, common Reversing valve (heating mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED

(capped) (capped)

15

SimpleComfort® 2811 Electronic Thermostat Conversion to: Goodman, Janitrol, Trane/American Standard Heat Pumps

Low Voltage Terminal Board

Goodman, Janitrol, Trane/American Standard

Note 1: X2 terminal on PCB capped Note 2: T terminal on PCB capped

16

R B O Y W-U G

SC 2811 Electronic Thermostat R

C

W1 O/B

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit

X2

(capped)

T

(capped)

Y1 W2 Y2

G

W3

SimpleComfort® 2811 Electronic Thermostat Conversion to: York E1CS, E1FB, E1FH Heat Pump Systems

Note 1: X terminal on PCB capped

SC 2811 Electronic Thermostat R

York E1CS, E1FB, E1FH Low Voltage Terminal Board

R B O Y W G X

C

W1 O/B

Y1 W2 Y2

G

W3

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit System monitor LED

(capped)

17

SimpleComfort® 2811 Electronic Thermostat Conversion to: Lennox CB19 Heat Pump Systems

Note 1: E terminal on PCB capped Note 2: L terminal on PCB capped

Lennox CB19 Low Voltage Terminal Board

R

18

C O Y W1 G E L

SC 2811 Electronic Thermostat R

C

W1 O/B

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit Fan contactor circuit Emergency heating circuit System monitor LED

(capped) (capped)

Y1 W2 Y2

G

W3

SimpleComfort® 2811 Electronic Thermostat Conversion to: Lennox HP19 and HP20 Heat Pump Systems

Note 1: E terminal on PCB capped

SC 2811 Electronic Thermostat R

Lennox HP19 and HP20 Low Voltage Terminal Board

V-VR X R M Y F E

C

W1 O/B

Y1 W2 Y2

G

W3

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit (sequencer 1) Fan contactor circuit Emergency heating circuit

(capped)

19

SimpleComfort® 2811 Electronic Thermostat Conversion to: Lennox HP21 With CB21 PCB Heat Pump Systems

Note 1: E terminal on PCB capped Note 2: L terminal on PCB capped

Lennox HP21 with CB21 Low Voltage Terminal Board

R-VR X O Y1 W1 Y2 F E L

20

SC 2811 Electronic Thermostat R

C

W1 O/B

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit 2nd stage cooling circuit Fan contactor circuit Emergency heating circuit System monitor LED

(capped) (capped)

Y1 W2 Y2

G

W3

SimpleComfort® 2811 Electronic Thermostat Conversion to: Lennox HP22 With CB19 PCB Heat Pump Systems

Note 1: E terminal on PCB capped Note 2: L terminal on PCB capped

Lennox HP22 with CB19 Low Voltage Terminal Board

R-VR X R M Y Y2 F E L

SC 2811 Electronic Thermostat R

C

W1 O/B

Y1 W2 Y2

G

W3

24 VAC, return 24 VAC, common Reversing valve (cooling mode) Compressor contactor 2nd stage heating circuit 2nd stage cooling circuit Fan contactor circuit Emergency heating circuit System monitor LED

(capped) (capped)

21

Configuration Mode The configuration mode is used to set the SC2811 to match your heating/cooling system. The SC2811 functions with heat pump, air conditioning, gas, oil or electric heat systems. To configure the SC2811, perform the following steps: 1. Remove the cover of the thermostat by gently pulling on one of the corners. 2. Simultaneously hold the SW5 and SW6 buttons in for 5 seconds while the SC2811 is in OFF mode. 3. Press the or button to change settings within each screen. 4. Press the SW6 button to advance to the next screen. Note: The SW5 button will return you to the previous screen. 5. To exit configuration mode, slide the Mode switch to Heat or Cool.

Configuration Mode Settings The setup screens for Configuration Mode are as follows: 1. Heat Pump and Non Heat Pump – Press the or button to configure as heat pump, or non-heat pump system. For heat pumps, there will be an anti-short cycle delay for heating and cooling. • 1 = Heat pump system • 0 = Non-heat pump system Press the SW6 button to advance to the next screen.

SET ROOM

2. Heat Source (Gas or Electric) – (Appears for non heat pump systems only) Change between “g” (Gas) and “E” (Electric). Press the or button to set heat source. Press the SW6 button to advance to the next screen.

SET ROOM

22

REMOTE

DIFF FILTER

DIFF FILTER

REMOTE

3. Compressor (1 or 2) – (Appears for heat pump systems only) Change between CP1 and CP2. Select the correct heat pump system. • 1 = Single compressor heat pump system. • 2 = Two compressor heat pump system. Press the or button to select. Press the SW6 button to advance to the next screen.

4. Reversing Valve (O-Active or B-Active) – (Appears for heat pump systems only) Change between “o” (Cool-Active) and “b” (Heat-Active). Press the or button to set reversing valve setting. Press the SW6 button to advance to the next screen.

5. Temperature Scale (F or C) – Choose Fahrenheit or Celsius. Press the or button to select. Press the SW6 button to advance to the next screen.

6. 1st Stage Temperature Differential (1°F to 3°F) (0.5°C to 1.5°C) Set the number of degrees between your “setpoint” temperature and your “turn on” temperature. Press the or button to set differential value. Press the SW6 button to advance to the next screen. 7. 2nd Stage Temperature Differential (1°F to 6°F) (0.5°C to 3.0°C) Set the number of degrees between when stage 1 turns on and when stage 2 turns on. Press the or button to set differential value. Press the SW6 button to advance to the next screen.

SET ROOM

REMOTE

DIFF FILTER

SET ROOM

REMOTE

DIFF FILTER

SET ROOM

REMOTE

DIFF FILTER

SET ROOM

REMOTE

DIFF FILTER

SET ROOM DIFF FILTER

SET ROOM

REMOTE

DIFF FILTER

REMOTE

SET ROOM

REMOTE

DIFF FILTER

23

8. 3rd Stage Temperature Differential (1°F to 6°F) (0.5°C to 3.0°C) Set the number of degrees between when stage 2 turns on and when stage 3 turns on. Press the or button to set differential value. Press the SW6 button to advance to the next screen. 9. Minimum Deadband (2°F to 9°F) (1.0°C to 4.5°C) Set the minimum separation between heat setpoint and cool setpoint in Auto Changeover Mode.

SET ROOM DIFF FILTER

SET ROOM

11. Minimum Cool Setpoint (45°F to 75°F) (7°C to 24.0°C) Adjust to control the minimum Cool set temperature allowed. Press the or button to select. Press the SW6 button to advance to the next screen.

SET ROOM

12. Maximum Heat Setpoint (55°F to 90°F) (13°C to 32°C) Adjust to control the maximum Heat set temperature allowed. Press the or button to select. Press the SW6 button to advance to the next screen.

SET ROOM

REMOTE

REMOTE

SET ROOM

REMOTE

DIFF FILTER

REMOTE

REMOTE

DIFF FILTER

DIFF FILTER

SET ROOM DIFF FILTER

DIFF FILTER

10. Staged Off Outputs SET Select whether the outputs for heating and cooling are staged ROOM off independently or are satisfied simultaneously. DIFF 1 = outputs staged off independently FILTER 0 = outputs off simultaneously Note: For 2 compressor heat pumps and multi-stage gas/oil systems, stage 3 is staged off independently when SO is set to O.

24

REMOTE

SET ROOM

REMOTE

DIFF FILTER

REMOTE

SET ROOM DIFF FILTER

REMOTE

13. Room temperature offset (+9°F to -9°F) (+4.5°C to -4.5°C) Adjust to calibrate displayed room temperature to match actual room temperature. Note: When not set to 0, ROOM will display Press the or button to select. Press the SW6 button to advance to the next screen.

SET ROOM

14. Maximum compressor cycles allowed per hour (-, 2-6) - = as many as needed, and 2-6 = maximum cycles/hour Press the or button to select. Press the SW6 button to advance to the next screen.

SET ROOM

15. Filter Check time (300-800, – – –) Set Fan Run Time (in hours) when Check Filter is displayed or set to – – – to disable. Press the or button to select. Note: After exiting configuration mode, to reset filter counter to zero and clear filter warning, press the and button simultaneously for 5 seconds. Press the SW6 button to advance to the next screen.

16. Status Indicator Light (Lt 0, 1, 2, 3) 0 = Status indicator never on 1 = Status indicator on with first stage 2 = Status indicator on with second stage 3 = Status indicator on with third stage Press the or button to select. Note: Red light indicates heating cycle and green light indicates cooling cycle. Slide the Mode switch to Heat or Cool to exit configuration.

REMOTE

DIFF FILTER

REMOTE

DIFF FILTER

SET ROOM

REMOTE

DIFF FILTER

SET ROOM

REMOTE

DIFF FILTER

25

Testing the Thermostat Once the thermostat is installed, it should be thoroughly tested. CAUTION!: Do not energize the air conditioning system when the outdoor temperature is below 50 degrees. It can result in equipment damage or personal injury.

Cool Test 1. Slide Mode switch to Cool mode. 2. Adjust set temperature so it is 5 degrees below room temperature. 3. Air conditioning should come on within a few seconds. Status indicator may come on. Cool Off Heat Auto 4. Adjust the set temperature 2 degrees above the room temperature and the A/C should turn off. There may be a fan delay on your system. Note: There is a five minute time delay to protect the compressor after it turns off. To temporarily bypass the five minute delay, slide the Mode switch to OFF for 2 seconds and then back to Cool.

Heat Test 1. Slide Mode switch to Heat mode. 2. Adjust the set temperature so it is 5 degrees above the room temperature. 3. Heat should come on within a few seconds. Status indicator may come on. 4. Adjust the set temperature so it is 2 degrees below the room temperature and the heat should turn off. There may be a fan delay on your system. Note: For heat pumps, there is a five minute time delay to protect the compressor after it turns off. To temporarily bypass the five minute delay, slide the Mode switch to OFF for 2 seconds and then back to Heat.

Cool Off Heat Auto

Fan Test 1. Slide Fan switch to On position. 2. Indoor fan turns on.

3. Slide Fan switch to Auto position. 4. Indoor fan turns off.

Auto

26

On

Auto

On

Mode of Operation The SC2811 is a three-stage heat, two-stage cool thermostat. It functions with air conditioning, heat pumps, gas, oil or electric heat. The thermostat activates the first stage heat when the room temperature is below the heat set temperature (by the differential temperature). Second stage heat will be activated if the room temperature continues to drop. Third stage heat is activated (on some systems) if the room temperature drops further. The heat outputs are staged off (configurable, setting 10, Page 24) as the room temperature increases. For heat pump systems, the thermostat will not let the compressor come on for five minutes after it turns off. This protects your compressor. When the room temperature is greater than the cool set temperature (by the differential temperature), the cooling device is activated. Second stage cool will be activated if the room temperature continues to rise. The cool outputs are staged off (configurable, setting 10, Page 24) as the room temperature drops. The thermostat will not let the compressor come on for five minutes after it turns off. This protects your compressor. The SC2811 has the following operating modes: OFF, Heat, Emergency Heat, Cool and Auto. In OFF mode, the thermostat will not turn on heating or cooling devices. In the Heat mode, the thermostat controls the heating system. For heat pump systems, Emergency Heat mode is used to bypass the compressor (only backup heat operates). In the Cool mode, the thermostat controls the cooling system. In the Auto mode, the thermostat operates as an auto changeover thermostat. It will turn on heating or cooling as required. The indoor fan can be turned on in all operating modes using the Fan switch. The SC2811 has an air filter check option also. When the fan run time exceeds the time set in the configuration (step 15, page 25), the filter reminder will be displayed. To reset the filter counter to zero and clear the filter reminder from the display, press the and buttons in simultaneously for 5 seconds.

27

Operating Modes These are the possible operating modes of the SC2811.

Off Mode In off mode, the thermostat will not turn on the heating or cooling appliances. Note 1: The indoor fan can be activated in every mode by sliding the Auto/On fan switch to the On position. Note 2: Off mode is used to enter the configuration setup (by pressing SW5 and SW6 simultaneously for 5 seconds).

Cool Mode In cool mode, the thermostat controls the cooling system. There is a five minute time delay after the compressor turns off. This protects the compressor.

Heat Mode In heat mode, the thermostat controls the heating system. For heat pumps, there is a five minute time delay after the compressor turns off. This protects the compressor.

Emergency Heat Mode (Heat pump systems only) In emergency heat mode, the heat pump system will be disabled and auxiliary heat will become the primary source of heat. ENTER Emergency heat mode by pressing the up button for ten seconds while in heat mode. “EH” will then display on the screen. EXIT Emergency heat mode by pressing the up button for ten seconds. “EH” will blink on the screen when you exit emergency heat mode. The SC2811 also exits emergency heat mode when the mode switch is moved to Cool or Auto.

Auto-changeover Mode In this mode the thermostat will automatically change from heat mode to cool mode, or vice versa. Pressing the or button in Auto mode causes the thermostat to display the heat set temperature then the cool set temperature. The set temperature that is displayed can be changed using the or button.

28

Troubleshooting Symptom

Remedy

No display

Check for 24 VAC at thermostat; display is blank when 24 VAC is not present

System fan does not come on properly

Verify wiring is correct Check configuration (see “Configuration Mode,” Setting 2, Page 22) See “Fan Test” (Page 26)

Thermostat turns on and off too frequently

Adjust temperature differential (see “Temperature Differential,” “Configuration Mode,” Settings 6, 7 and 8, Pages 23 and 24)

Fan runs continuously

Check fan On/Auto switch, ON position runs indoor fan continuously

Room temperature is not correct

Verify wall hole is plugged with putty or insulation; calibrate thermostat (see “Configuration Mode,” Setting 13, Page 25)

ROOM displays

Room temperature offset is not zero (see “Configuration Mode,” Setting 13, Page 25)

Status indicator

Green light – Cooling operation Red light – Heating operating Status indicator option ON (see “Configuration Mode,” Setting 16, Page 25)

filter displays

Fan run time has exceeded filter check time set in configuration (see “Configuration Mode,” Setting 15, Page 25) To reset counter to zero and clear filter warning, press the and simultaneously for 5 seconds

buttons

EH displays when button is pressed

Thermostat is in Emergency Heat mode (see “Operating Modes,” Page 28)

Er displays

Sensor error – check S1 & S2 connections, check remote sensor wire and connections, use grounded shielded wire for remote sensor

Problem not listed above

Press the Reset button once; display will be refreshed and anti-short cycle timing will be reset to zero

29

ONE-YEAR LIMITED WARRANTY The Seller warrants its products against defects in material or workmanship for a period of one (1) year from the date of manufacture. The liability of the Seller is limited, at its option, to repair, replace or issue a non-case credit for the purchase prices of the goods which are provided to be defective. The warranty and remedies set forth herein do not apply to any goods or parts thereof which have been subjected to misuse including any use or application in violation of the Seller’s instructions, neglect, tampering, improper storage, incorrect installation or servicing not performed by the Seller. In order to permit the Seller to properly administer the warranty, the Buyer shall: 1) Notify the Seller promptly of any claim, submitting date code information or any other pertinent data as requested by the Seller. 2) Permit the Seller to inspect and test the product claimed to be defective. Items claimed to be defective and are determined by Seller to be non-defective are subject to a $30.00 per hour inspection fee. This warranty constitutes the Seller’s sole liability hereunder and is in lieu of any other warranty expressed, implied or statutory. Unless otherwise stated in writing, Seller makes no warranty that the goods depicted or described herein are fit for any particular purpose.

Patent No. 424,953 6333 Daedalus Drive, Cicero, NY 13039 (Toll Free) 800-365-5525 (Phone) 315-233-5266 (Fax) 315-233-5276 www.icmcontrols.com

LIA202-2