Trouble Shooting and Service Guide
Page
1 2 3 4 5 6 6 7 8, 9 10 11 12 13-16 17-19 23-23
62002 - Quick-Start Guide, Gen. 3.6
Topic
Component Locations Component Voltages Fuse Size & Fuse Location A/C Troubleshooting Heat Troubleshooting Inverter DC Power Converter Battery Separator Water Heater Cab Power Shore Power AGM Batteries Charge Circuit Amperage Draw Inverter Explained
12/18/12
Component Locations
Exterior Unit The Exterior Unit contains: Top Level:
Air Conditioner + Condenser fan Water Heater + fuel pump Battery Separator Battery Bank Fuse
Lower Level:
AGM Batteries Battery Quick Connectors
Evaporator Assembly The evaporator assembly includes an evaporator, and a 120 Volt AC blower motor. There is a serviceable air‐filter located on the back side of the unit. Bunk Floor Module Bunk Floor Module includes:
Inverter Buss Bars (positive & negative) Power Converter 120 VAC to 12 VDC Relays for Ignition, Compressor, Evaporator Blower fan Relay
Wiring & Plumbing The wire harness uses industry standard connectors and is split to serve each component. The water heater is plumbed into the truck’s coolant system by using the bunk’s heater core supply (pressure side) hose as the intake (supply) for the Idle Free heater. The output hose on the Idle Free heater becomes the water supply hose for the truck’s bunk heater core.
The exterior unit contains 4 group 31 AGM batteries on the lower level The IF air conditioner is split into 2 parts The exterior portion of the IF air conditioner includes: o 120 VAC compressor o Accumulator o Dryer o Condenser o 12 VDC Cond. Fan o Capacitor o Hard Start Cap. All of the exterior Air conditioning components can be changed and/or serviced The IF air conditioner uses 134A refrigerant. This service manual contains chapters for all components The major components used in the Idle Free system are shipped with the manufactures manuals included
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Components Electrical Power Type and Location
Component
Evaporator fan
Electrical Power Source
Location
Closet‐Bunk
120 VAC
Air Conditioning Compressor 120 VAC
Exterior Frame Module
Condenser Fan
IF RelayƐ
WŽǁĞƌŽŶǀĞƌƚĞƌ
12 VDC
Exterior Frame Module
120 VAC & 12VDC
under bed Module
120 VAC (shorepower)
under bed Module
Battery Separator
12 VDC
AGM Batteries
Exterior Frame Module
Thermostat
AA Batteries 12VDC
Bunk
Inverter
under bed Module
DC Power Connectors Fan Control Relay
12 VDC
12 VDC 12 VDC 12 VDC
Exterior Frame Module
under bed Module
under bed module
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Fuse Use Truck Charge Inverter Master Water Heater Ignition Cut-out Truck Blower Fan Fan control fuses Condenser Fan
Fuse Size 250 250 20 5 30 10 15
Fuse Location Truck Battery box APU (exterior) APU (exterior) Ignition source UBB Module (front) UBB module (front) APU (exterior)
1101 Industrial Drive | Watertown, WI 53094 Phone 920-206-6900 | Fax 920-206-6099 | www.idlefreesystems.com
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Trouble Shooting Air Conditioning Quick Guide Air Conditioning Check:
Ignition switch is not in the ON position
Thermostat set to air conditioning Temperature set to a temperature below room temperature
Thermostat’s AA batteries are properly seated in the thermostat Thermostat’s AA batteries are not dead
Inverter is turned on Inverter remote switch (option) is plugged into inverter
Inverter remote switch has a phone cord plugged into it Inverter Master switch is in the ON position
Inverter is sending 120 VAC power from outlet GFI outlets on inverter are not tripped
AGM battery voltage is above 11.0 volts Thermostat wires are properly seated inside the thermostat (Base of thermostat) Thermostat cord is plugged into the UBB Box
Thermostat Fuse (5 AMP) is not blown APU power cord is plugged into the UBB
The IF system will not operate if the ignition switch is turned on Hold the up or down arrows to move the temperature setting on the thermostat The Thermostat AA Battery holder is the small door on the bottom of the thermostat face The inverter master switch is located below the outlets on the inverter Turn the master switch to “OFF” center position and then back to “REMOTE” to reset the inverter The inverter master switch can be placed to “ON” to test the inverter Leaving the switch in the “ON” position will not allow the inverter to be turned “on/off” with the remote switch The face of the thermostat can be removed by pressing the tab “IN” located near the bottom of the thermostat
Evaporator fan is plugged into the UBB
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Issue: No heat (no blower fan)
Heat Trouble Shooting Check: 1. The ignition switch is in the on position. a. Turn ignition key off 2. Thermostat not set to heat. a. Thermostat System switch must be set Heat 3. Batteries in thermostat are low or dead. a. Check and replace if necessary 2 “AA” batteries in thermostat 4. Thermostat cable disconnected or damaged between thermostat & UBB a. Replace bad cable 5. Thermostat not providing signal. a. Check 5 AMP Fuse
Issue: No heat, but blower runs Check: 1. Key on, truck off. a. Turn ignition key to off position 2. Thermostat not set to heat. a. Turn thermostat to HEAT 3. Heater not receiving 12VDC power. a. Check for water heater for a blown fuse. 4. Heater not getting fuel. a. Check fuel delivery system from tank pick up to heater, including proper operation of dosing (fuel) pump in Exterior Battery Box. 5. Heater not able to receive or provide water due to blockage. This will cause the heater to go into an “over heat” condition, and shut down. a. Check for any kinks in hoses, shut water valves (on engine block), low coolant level, or other constriction of cooling system & hoses. Confirm Water pump on coolant heater is getting voltage, and is running. Check body of heater. If it is too hot to touch, it does not have coolant in the body of the heater. The cause of this must be corrected before continuing. 6. Heater has timed out due to safety value being exceeded. a. Check above issues to determine fault, and then reset heater by removing top two wire connector going into heater (Red & Brown wires). Wait 30 seconds, and then replace. The manual that comes with this heater has been included with the paper work included with this system. Please reference that manual if you need more detailed information.
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Bunk Floor Module – Inverter
The inverter is located inside the Bunk Floor module. The inverter receives 12 volt DC power from the DC power connectors (next to the , . inverter) The inverter provides power for the AC compressor, and evaporator fan, as well as power to the bunk 120VAC outlets.
Issue: Inverter does not work Check: 1. Inverter switch is not on. a. Press Inverter remote on button. 2. Inverter remote switch is disabled at the Inverter. a. Identify switch location and place in remote position. 3. Inverter remote cord damaged or disconnected. a. Reconnect, or repair/replace damaged cord. 4. DIP switches have been changed. a. Correct DIP switch configuration is DIP Switches 2‐3 are off (0) to the right 1&4 (left) 5. Inverter fuse (In IFS Exterior Battery Box) is blown. a. Check fuse and replace with 250 Amp fuse if blown. 6. DC input leads loose at Inverter or DC Power connectors. a. Check and tighten as necessary. 7. Over or under DC input voltage. a. Confirm with meter at input terminals. b. Also check LED fault display on Inverter end with 120 VAC plugs. Converter DC Power to DC Power Converter will charge the AGM batteries as well as the truck’s batteries. 1. The AC 2. The Converter is capable of maintaining both battery banks, and allows unlimited use of AC operation. 3. The Converter receives its 120 VAC power from a Shore Power connection, and works in conjunction with a battery separator to keep both battery banks at optimal charge when shore power is available. 4. The bunk’s 120 VAC outlets are powered by the Inverter (Inverter is on). 5. The Power converter provides up to 55 DC Amps of power. 6. The power converterprovides DC power to the DC buss; located in the Bunk Floor Module. 7. The Power Converter's DC power is distributed throughout the Idle Free System. 6
Trouble Shooting Battery Separator The ground wire for the battery separator connects on the bottom terminal. The opposite end of the ground wire connects to a ground post located near the battery separator
The voltage reading taken at the top of the battery separator will be the same if the truck’s engine is running. The voltage reading taken at the top of the battery separator will be the same if the battery charger is plugged in. One terminal on the top of the battery separator is connected to the truck’s battery bank One terminal on the top of the battery separator is connected to the Idle Free AGM battery bank.
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Trouble Shooting Water Heater Check: The water heater will allow the user to attempt to start (the water heater) 5 times without success. After a 5th try the water heater will not go through the start cycle The ǁĂƚĞƌ,ĞƚĂĞƌ fusewillneed toberemoved for 5 seconds to reset the computer The water heater will not work properly (start) for 3 reasons: 1. No fuel 2. No water in the heater 3. No electrical power Fuel If the water heater has not been used for a period of time the fuel supply tube may need to be primed. This is the most common reason that the water heater does not start. To prime the water heater fuel system, turn on the water heater. If the water heater does not come on, remove the power plug (top of water heater) for 5 seconds or more. This resets the water heater’s computer. Yellow fuse is under the black fuse cover (near the water heater) Remove the power supply connector on the top of the water heater to reset the water heater faults
The water heater is located on the exterior of the truck inside the frame mounted IF system module Remove the APU cover and you will find the water heater on the upper level ( left side) The fuse for the water heater is to the left of the water heater in a black plastic fuse holder Typically the water heater will have water present The only time that the water heater does not have water present is when the truck’s water valves have been closed or during the initial installation when air is introduced into the water heater The best way to purge the system of air is to ensure that the engine’s water heater valves are open & that the engine is run until engine heat is felt on the side of the water heater body Fuel can be seen traveling through the plastic fuel line When the fuel reaches the water heater ignition can be heard Check the fuel pump connector to make sure that both wires are properly connected to the fuel pump
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The water heater goes through a 3 – 4 minute start cycle: 1. Water pump begins to run 2. Fan runs at low speed 3. Internal glow plug heats up 4. After about 30 seconds the fuel pump begins to pump (click) 5. Fuel moves from the fuel pump to the heater body (you can see the fuel moving) 6. Fan begins to pick up speed 7. Fuel pump speed (clicks) increase 8. Heat begins to exit the heater body exhaust This start cycle will stop if fuel does not reach the water heater If water heater cycle stops because of lack of fuel, wait for the heater to stop and then restart the cycle by turning the water heater switch off and then on again
Note; anytime that the water heater does not start a fault is recorded in the water heater’s computer. After the Water heater’s computer records 5 faults the water heater will not attempt to start without a computer reset. To reset the water heater’s computer, remove the power plug (top of water heater) for 5 seconds or more. This clears the recorded faults and resets the water heater’s computer
The water heater can be reset by pulling the power plug located on the top (center) of the water heater Make sure that you let the water heater go through its start cycle before attempting to start the unit again If the water heater does not see fuel you may have to attempt to start a number of times If the fuel tank pickup tube has not been placed low enough in the fuel tank the water heater will run out of fuel and priming of the fuel system will need to take place anytime that the tanks fuel level drops below that of the fuel pick up If you can see the fuel pick up tube inside the tank, you can determine if the end of the tube is submerged in fuel If the fuel pick up tube is above the fuel line, use a clean rod to reposition the fuel pick up tube closer to the bottom of the tank
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120 Volt Interior Outlets Cab Power
Cab Power receives its 120 VAC power from the Idle Free inverter The inverter must be turned on in order for the Cab Power to have 120 VAC power Is the Cab Power switch on?
Is the Cab Power circuit breaker tripped? Check Inverter is turned on Inverter remote switch is plugged into inverter
Inverter remote switch has a phone cord plugged into it Inverter Master switch is in the REM position Inverter is sending 120 VAC power to the circuit board
GFI outlets on inverter and Cab power are not tripped AGM battery voltage is above 11.0 volts
Does the LED light bar show voltage? (LED’s lit) Check 12 volt DC power fuse located under the aluminum cover on the exterior unit if the inverter does not have a DC voltage reading on the DC input terminals
If the truck is plugged into shore power (120 VAC) the inverter must be on to supply power to the bunk The inverter remote plugs into the inverter using a phone cord The phone cord plugs into the inverter on the rear side, near the DC cable inputs The inverter has a GFI reset button in between the 2 120 VAC outlets The cab power box has a GFI outlet The GFI outlet is the same as you will find in your home The inverter remote is working when the RED LED is lit (inverter On)
Reset switch on Cab Power Box Cab Power Box is located in the driver’s side box and is mounted on a side wall Cab Power switch is resettable – OFF and then ON ‐ to reset
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Shore Power
When the truck is plugged in to a 120 volt AC power source, “Shore Power”, the power is sent to the Power Converter. The power converter provides 12VDC power to the AGM Batteries The power to run the Idle Free Air conditioner or heater is supplied through the power converter. The 120 volt outlet strip is powered by the Inverter (inverter on). The DC Power fuse (250 AMP) is located above the batteries under a rubber covered fuse holder (exterior) The Idle Free System batteries are automatically charged when plugged into shore power The truck’s batteries will receive 12VDC power from the power converter once the voltage of the AGM batteries reaches 13.2 VDC and above.
“Shore power’s” power cord starts on the driver’s side of the truck, enters into the bunk floor and is plugged into the power cord attached to the battery charger Shore power does not power the 120 VAC power strip The Battery Charger charges the IF AGM batteries and the truck’s batteries when the AGM batteries reach 13.2 volts DC power is transferred from the IF bunk floor module to the exterior battery box through the positive and negative buss bars A 250 AMP fuse is located under the aluminum cover in the exterior IF Power Module
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AGM Battery Check Procedure 09/01/10
Overview The Idle Free system receives its DC battery charge power from the truck’s alternator through the truck’s battery bank. Defective starter battery(s), a weak alternator, or poor truck cables/connections prohibit the Idle Free AGM batteries from receiving an adequate charge from the truck’s charge circuit. The Idle Free Battery Separator automatically closes (connects) when the truck’s alternator’s voltage output reaches 13.2 volts. When a problem exists in the truck’s charge circuit the Idle Free Battery Separator does not close and the Idle Free battery bank does not charge. Since the Idle Free AGM batteries depend on the truck’s charge circuit to receive their energy, the truck’s charge system needs to be checked prior to testing the Idle Free AGM batteries. Truck Starter Batteries
Alternator
Idle Free AGM Batteries
250 AMP Fuse
Idle Free Battery Separator
Ground
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How to Check the IFS Charge System 1. Start the truck 2. Remove the APU cover 3. Check the AGM battery voltage and the trucks battery voltage at battery separator a) Single cable = truck side b) Double cable = AGM side
Battery Separator
4. With the truck running, the single cable (truck side) on the top of the battery separator should be 13.8 volts or greater. Record the actual voltage. 5. The closer of the two terminals on top of the separator is the AGM battery bank. Since the battery separator closes at any voltage above 13.2 volts, this connection point should read the same as the truck side cable. 6. Measure DC voltage at the trucks alternator truck running 7. Determine voltage differential (battery voltage drop) between the battery separator (single cable) and the truck’s alternator. Record this voltage and compare it to the battery voltage taken at the truck’s alternator. Acceptable DCV drop • .3 VDC or less If greater than .3, check the all DC connection points, these connection points include the following: • Alternator + • Truck Battery + • 250 AMP Fuse (2 connectors) • Green , Red and Black Marinco Connector Check the connections to make • Panel mount Marinco (3) Red, Green black (female) sure they are: • AGM Battery = 4 x 2 Clean • Battery SEP = 2 Tight • Fuse 2500 (2) APU • UBB + -
Note: Volvo protects their truck cab circuitry by use of a fusible link on the ground side of the DC alternator circuit. We had known that Volvo uses such a device but we did not know that the fusible link specified was based on the size of the alternator. Volvo downsizes their DC cable (2 sizes) for their fusible link. This issue relates to the voltage drop seen across this fusible link as it relates to adequate AGM battery charging. A voltage drop is clearly evident when a larger alternator is used on a truck that has a fusible link. If your customers have Volvo trucks, move the IFS ground cable be moved to the alternator side of the Volvo DC fusible link. Idle Free Systems ™
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Volt to Amp Chart
2 hours in = 12.3 or 50%
Time at and above 14.0 volts determine 100% charge
AGM Batteries
90% charged when AGM batteries hit 14.0 VDC Using a clamp amp meter to check the truck charge (the clamp amp meter must be DC capable) Truck Engine Running: Use “AMP to Volt” chart to determine what AMPs and Volts to look for under current Volt and Amp conditions If Alternator voltage is >14.0 VDC: • Expect to see