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RV Products 6535 SERIES Service Manual

Two ton high efficiency packaged heat pumps
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SERVICE MANUAL
FOR
6535 SERIES TWO TON HIGH EFFICIENCY
PACKAGED HEAT PUMPS

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Summary of Contents for RV Products 6535 SERIES

  • Page 1 SERVICE MANUAL 6535 SERIES TWO TON HIGH EFFICIENCY PACKAGED HEAT PUMPS...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Warnings ................. . 2 Accessibility Of Appliance .

  • Page 3: Accessibility Of Appliance

    2. ACCESSIBILITY OF APPLIANCE The accessibility of this appliance will vary from one judgement, the best method of attaining access to perform installation to another. It shall be left to the service service. technicians. 3. UNIT DIMENSIONS AND SPECIFICATIONS PACKAGE HEAT PUMP MODEL NUMBER BREAKDOWN FOLLOWS: Revision Model Series 6 - Panasonic Compressor(s)

  • Page 4: Unit Depiction Figures

    5. UNIT DEPICTION FIGURES Figure 1 Figure 2...

  • Page 5: General Information

    6. GENERAL INFORMATION This packaged heat pump mounts below the floor of the stage (the first compressor and refrigeration circuit), will vehicle. The innovative design makes it possible to maintain a operate when: smooth, free-flowing roof line for the vehicle. It also relocates all noise and condensate drainage off the roof to below the The thermostat is demanding cooling or electric floor of the vehicle.

  • Page 6: Thermostat Operation

    WHEN THE THERMOSTAT IS SWITCHED TO HEAT AND ELECTRIC HEAT IS DEFAULT MODE: SELECTED ON THE SUB-BASE, AND THE OUTDOOR TEMPERATURE FALLS TO A POINT AT WHICH THE HEAT PUMP SHUTS DOWN (USUALLY BETWEEN 25 - 40 DEGREES), THE SUB-BASE WILL AUTOMATICALLY ALSO CALL FOR GAS FURNACE OPERATION IF THE INDOOR TEMPERATURE DROPS TO 45 DEGREES.

  • Page 7: 6535-3351 Coleman-Mach Series Thermostat

    6535-3451 Thermostat Wiring The thermostat operation switches the 12VDC + to all output terminals 7B. THERMOSTAT - 6535-3351 COLEMAN-MACH SERIES THERMOSTAT 6335-3351 THERMOSTAT OPERATION The display indicates room temperature and the word ROOM is shown on the LCD until the temperature selector is pressed; In gas heat mode, the gas furnace will provide the only source at which time the display temporarily indicates the setpoint of heat and the heat pump is locked out.
  • Page 8 6535-3351 Heat Pump Thermostat Example To Bring On Gas Furnace as 2 Stage Heat Setpoint Indoor Temp. Operation No functions occur Heat Pump turns on (Primary heat source) Heat Pump turns off (Thermostat satisfied) Heat Pump turns on Gas Furnace turns on (Heat Pump not able to satisfy Thermostat) (First strike for 2 stage heat counter) Heat Pump and Gas Furnace turn off (Thermostat satisfied)
  • Page 9 6535-335 2-stage Heat Pump Thermostat Operation Table Mode Switch Fan Mode Switch Fan Speed Switch Calling Operation Cool Auto No functions occur in this mode Cool Auto Stage 1 ID fan low, compressor #1 and OD blower low 1° Above Set cycle as needed Cool Auto...

  • Page 10: Heat Pump Operation Sequence Cooling Mode

    8. A TYPICAL COOLING CYCLE OF THE HEAT PUMP Begins with a call from the wall thermostat for High or Low fan Compressor 2 starts, the outdoor fan goes off (subject to (customer choice). available 115 volt power supply). Indoor fan starts on the selected speed. Outdoor fan starts again 2 seconds later (High Speed).

  • Page 11: Wirebox Component Checkout A. Wirebox Component Checkout 6535 (-) Series

    10A. WIREBOX COMPONENT CHECKOUT 6535 “-” Model Unit Note: The drawing above depicts a typical control box for the 6535 “-” Model Heat Pump only. Heat Pump control boxes beginning with the “A” model do not have a high pressure switch. The Heat Pump Printed Circuit Board has changed from time to time, the terminal designations and board components as noted above may have changed locations on the board.

  • Page 12: Wirebox Component Checkout 6535 (A) Series

    10B. WIREBOX COMPONENT CHECKOUT 6535 “A” Model Printed Circuit Board...

  • Page 13: Service Problems And Possible Solutions

    11. SERVICE PROBLEMS AND POSSIBLE SOLUTIONS COOLING MODE Problems Possible Solutions Nothing Runs - Cooling Mode No A/C Voltage, No 12 VDC, Thermostat, Wiring, P.C. Board, High Pressure Switch Open IDFM* Runs, No Compressor, No ODFM* Cooling Freeze Thermister - (Insufficient Indoor Air Flow), Thermostat, Wiring, Compressor, Contactor, P.C.

  • Page 14: Electrical Diagnostic Flow Charts

    12. ELECTRICAL DIAGNOSTIC FLOW CHARTS 6535 SERIES With the use of these flow charts, you will be able to quickly To use these flow charts, start at the top left corner. Check identify a non-working problem. Determine if the problem is what is indicated in that box.

  • Page 15: Cooling Mode Operation

    12A. HEAT PUMP OPERATION SEQUENCE; COOLING MODE...

  • Page 16: No Cooling; Cooling Mode (Green L.e.d. Light Circuit)

    12A.1 No Cooling; Cooling Mode No Green L.E.D. light F/FY Circuit Open to The Thermostat Note: The green light on the board has some new functions on the 6535 “A” model. If the light is on solid, everything is OK. If the light is blinking slowly, the unit is in a 3 minute time delay. If the light is blinking fast, there is either no line voltage to Circuit 1 or one of the thermisters are open.

  • Page 17: No Indoor Blower Low Speed; Cooling Mode

    12A.2 No Indoor Blower Low Speed; Cooling Mode Thermostat Set To Low Cool Note: All operating functions subject to thermostat time delays. Important Notice: If the unit is equipped with a high pressure switch and this switch opens, it Opens the 12 VDC (-) negative circuit from the thermostat to the P.C. Board and all heat pump functions are dead.

  • Page 18: No Indoor Blower High Speed; Cooling Mode

    12A.3 No Indoor Blower High Speed; Cooling Mode Thermostat Set To High Cool Note: All operating functions subject to thermostat time delays. Important Notice: If the unit is equipped with a high pressure switch and this switch opens, it Opens the 12 VDC (-) negative circuit from the thermostat to the P.C. Board and all heat pump functions are dead.

  • Page 19: Compressor #1 Checkout; Cooling Mode

    12A.4 Compressor #1 Checkout; Cooling Mode Thermostat Calling For Cooling Note: All operating functions subject to thermostat time delays Important Notice: If the unit is equipped with a high pressure switch and this switch opens, it Opens the 12 VDC (-) negative circuit from the thermostat to the P.C. Board and all heat pump functions are dead.

  • Page 20: Compressor #2 Checkout; Cooling Mode

    12A.5 Compressor #2 Checkout; Cooling Mode Thermostat Calling For Cooling Note: All operating functions subject to thermostat time delays. Important Notice: If the unit is equipped with a high pressure switch and this switch opens, it Opens the 12 VDC (-) negative circuit from the thermostat to the P.C. Board and all heat pump functions are dead.

  • Page 21: Heating Mode Operation

    12B. HEAT PUMP OPERATION SEQUENCE HEATING MODE...

  • Page 22: No Heating; Electric Heat Mode (Green L.e.d. Light Circuit)

    12B.1 No Heating; Electric Heat Mode (Green L.E.D. Light Circuit) F/FY Circuit Open to The Thermostat Note: The green light on the board has some new functions on the 6535 “A” model. If the light is on solid, everything is OK. If the light is blinking slowly, the unit is in a 3 minute time delay. If the light is blinking fast, there is either no line voltage to Circuit 1 or one of the thermisters are open.

  • Page 23: No Indoor Blower; Electric Heat Mode

    12B.2 No Indoor Blower; Electric Heat Mode Note: Only High Fan Speed Is Energized In The Heating Mode. All Operating Functions Subject To Thermostat Time Delays. Important Notice: If the unit is equipped with a high pressure switch and this switch opens, it Opens the 12 VDC (-) negative circuit from the thermostat to the P.C.

  • Page 24: Compressor #1 Checkout; Electric Heat Mode

    12B.3 Compressor #1 Checkout; Electric Heat Mode Note: All Operating Functions Subject To Thermostat And P.C. Board Time Delays. Thermostat or Sub-base Must Be In The Electric Mode.

  • Page 25: Compressor #2 Checkout; Electric Heat Mode

    12B.4 Compressor #2 Checkout; Electric Heat Mode Note: All Operating Functions Subject To Thermostat And P.C. Board Time Delays. Thermostat or Sub-base Must Be In The Electric Mode. Important Notice: If the unit is equipped with a high pressure switch and this switch opens, it Opens the 12 VDC (-) negative circuit from the thermostat to the P.C.

  • Page 26: No Reversing Valve Operation Electric Heat Mode

    12B.5 No Reversing Valve Operation Electric Heat Mode Note: All Operating Functions Subject To Thermostat And P.C. Board Time Delays. Thermostat and/or Sub-base Must Be In The Electric Mode. Note: If the Compressors or Fan Motors are not Running, Refer To Proper Checkouts. Important Notice: If the unit is equipped with a high pressure switch and this switch opens, it Opens the 12 VDC (-) negative circuit from the thermostat to the P.C.

  • Page 27: Outdoor Blower Motor; Heating Or Cooling Mode

    12C. OUTDOOR BLOWER MOTOR; HEATING OR COOLING MODE 12C.1 No Outdoor Blower Low Speed...

  • Page 28: No Outdoor Blower High Speed

    12C. OUTDOOR BLOWER MOTOR; HEATING OR COOLING MODE 12C.2 No Outdoor Blower High Speed...

  • Page 29: Wiring Diagram - 6535 (-) Series

    13. WIRING DIAGRAM - 6535 (-) SERIES...

  • Page 30: Wiring Diagram - 6535 (A) Series

    14. WIRING DIAGRAM - 6535 (A) SERIES...
  • Page 31 RV Products A Division of Airxcel, Inc. P.O. Box 4020 Wichita, KS 67204 1976E323 (8-05)

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