Question about Honeywell L4064B2236 Fan/Limit Control Heater

1 Answer

Not enough screws on my control board

I added air conditioning to my day and night forced air heater. All
went well to the point of connecting the termostat to the control
board and found out I only had W,R,andC terminals.I don't think
I have a cooling relay. Can I add one? buy a new board with one?

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I sounds like the thermostat you have is heating only. You need to buy and install a heating/cooling thermostat. The new thermostat will have a sheet with wiring diagrams to choose from.

Posted on Apr 23, 2009

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How to change a heater control unit/heater control ford puma


Ford Puma

What you will need:-
1.Phillips Screw Driver
2.Depending on what stereo system you have, stereo removal keys.

REMOVAL AND INSTALLATION

Climate Control Assembly/heater control unit/

Removal
1. Standard preparatory measures

Make a note of the radio keycode.

Make a note of the preset radio stations.
CAUTION:
Disconnect the battery negative lead.
2. Remove the radio.
3. Note:The control unit for the heating/air conditioning system, all operating knobs and the air distribution operating switch make up one assembly.

Remove the bezel/control unit.

1 Remove the screws on the top of the unit

2 Unclip the clips either side of the unit

Pull the bezel/unit forwards.

Disconnect the plug.
4. Unclip the air distribution shaft.
5. Remove the heater/air conditioning module and the fan operating switch.

Installation
1. Refit the components in the reverse order.
2. Install the radio.
3. Connect the battery ground lead.

Enter the radio keycode.

Reprogramme the preset radio stations.

Reset the clock.

Carry out a road test to enable the PCM to collect data.
4. Check that the heater/air conditioning operates properly.

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1 Answer

Where is the blend door actuator and how to replace it on 2004 honda odyssey


The air mix control motor is accessible from the front passenger-side floor board area. From that vantage point, look toward the heater and under. The air mix control motor is a black plastic housing with a wire connector and a rod that connects to a white plastic air mix control linkage. Disconnect the wire connector, remove the rod, and remove the screws that hold the unit into the bottom of the heater. You will need a stubby Phillips head screwdriver or a Phillips bit on a small ratchet as the clearance between the unit and the floor is not enough for a standard screw driver. There is also a small piece of dash colored plastic trim that can be removed for easier access.

Mar 04, 2011 | 2004 Honda Odyssey

1 Answer

My heater was working fine for 2 days. I unplugged it for the night and the next morning it wont do anything. Its like its not plugged in. The fan doesnt spin, there is no preheating of the element....


There is a fuse on your circuit board I would check to make sure that this fuse has not blown.

If this fuse is not blown then make sure you are getting power through the switch to the board.

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Need to remove heater A/C dash control , what is proper procedure?


Look at fig. 4 for the heater a/c dash control: HEATER CORE Altima REMOVAL AND INSTALLATION
  1. Position the steering wheel in the straight-ahead position.
  2. Turn the ignition switch OFF.
  3. Disconnect the negative (() battery cable; then, the positive (+) battery cable. NOTE: Wait for a least 3 minutes after disconnecting the battery cables for the charge in the air bag circuit to dissipate before working on the air bag module(s).
  4. Remove the driver's side SRS and steering wheel by removing or disconnecting the following:
    • Lower lid from the steering wheel and disconnect the driver's air bag module connector
    • Left and right side lids from the steering wheel
    • Special bolts from both side of the steering wheel using a tamper resistant Torx wrench (T50)
    • Air bag module and store it face up
    • Horn's electrical connector and remove the steering wheel nut
    • Steering wheel from the steering column using a suitable puller
  5. Remove the passenger's side SRS by removing or disconnecting the following:
    • Glove box door and the glove box
    • Front passenger's air bag module connector
    • 2 special bolts using a tamper resistant Torx wrench (T50)
    • 4 passenger's air bag-to-instrument panel nuts
    • Front passenger's air bag module and store it face up.
  6. Drain the cooling system into a clean container for reuse.
  7. Discharge and recover the air conditioning system refrigerant.
  8. Working in the engine compartment, disconnect the heater hoses from the heater core tubes.
  9. Remove the instrument panel by removing or disconnecting the following:
    • Kick plate and dash side finisher on the driver's side
    • 2 lower panel-to-instrument panel screws and the lower panel on the driver's side
    • 2 lower reinforcement panel-to-instrument panel screws and the lower reinforcement panel
    • 6 steering column cover screws, the covers, the spiral cable and combination switch
    • 2 cluster lid "A" screws and the cluster lid "A"
    • 3 combination meter screws, disconnect the electrical harness connector and remove the combination meter
    • Switch panel
    • Instrument panel lower covers
    • Snap out the transmission shifter finisher (boot)
    • 4 cluster lid "C" screws and the cluster lid "C"
    • 4 audio and deck pocket-to-instrument panel screws and the audio and deck pocket
    • 5 center console screws and the center console
    • 2 center instrument panel screws and the center panel
    • front defroster grilles
    • Front pillar garnish
    • Instrument panel 3 nuts/4 screws and the instrument panel
    • 8 instrument stay assembly nuts and the stay
    • Steering member assembly 5 nuts/1 bolt and the steering member
  10. Remove the air conditioning housing assembly by removing or disconnecting the following:
    • Refrigerant lines from the air conditioning housing assembly
    • Thermo control amp
    • Air conditioning housing assembly
  11. Remove or disconnect the following:
    • Heater unit
    • Heater core from the heater unit Fig. 1: Exploded view of the steering wheel and air bag module 93112gd9.gif
      Fig. 2: Exploded view of the passenger's side air bag module 93112gd0.gif
      Fig. 3: Exploded view of the instrument panel assembly 93112ge1.gif
      Fig. 4: Exploded view of the heater housing assembly and related components 93112ge2.gif
      Fig. 5: View of the heater core and heater housing 93112ge3.gif
    To install:
  12. Install or connect the following:
    • Heater core to the heater unit
    • Heater unit
  13. Install the air conditioning housing assembly by installing or connecting the following:
    • Air conditioning housing assembly
    • Thermo control amp
    • Refrigerant lines to the air conditioning housing assembly
  14. Install the instrument panel by installing or connecting the following:
    • Steering member assembly and the steering member 5 nuts/1 bolt
    • Instrument stay assembly and the 8 stay nuts
    • Instrument panel and the instrument panel 3 nuts/4 screws
    • Front pillar garnish
    • Front defroster grilles
    • Center instrument panel and the 2 center panel screws
    • Center console and the 5 center console screws
    • Audio and deck pocket and the 4 audio and deck pocket-to-instrument panel screws
    • Cluster lid "C" and the 4 cluster lid "C" screws
    • Snap in the transmission shifter finisher (boot)
    • Instrument panel lower covers
    • Switch panel
    • Combination meter, connect the electrical harness connector and install the 3 combination meter screws
    • Cluster lid "A" and the 2 cluster lid "A" screw
    • Combination switch, the spiral cable, the covers and the 6 steering column cover screws
    • Lower reinforcement panel and the 2 lower reinforcement panel-to-instrument panel screws
    • Lower panel and the 2 lower panel-to-instrument panel screws, on the driver's side
    • Kick plate and dash side finisher, on the driver's side
  15. Working in the engine compartment, connect the heater hoses to the heater core tubes.
  16. Install the passenger's side SRS by installing or connecting the following:
    • Front passenger's air bag module
    • 4 passenger's air bag-to-instrument panel nuts
    • 2 new special bolts and torque using a tamper resistant Torx wrench (T50) to 11-18 ft. lbs. (15-25 Nm)
    • Front passenger's air bag module connector
    • Glove box door and the glove box
  17. Install the driver's side SRS and steering wheel by installing or connecting the following:
    • Steering wheel to the steering column
    • Steering wheel nut and torque the nut to 22-29 ft. lbs.
    • Horn's electrical connector
    • Air bag module
    • New special bolts to both sides of the steering wheel and torque the bolts using a tamper resistant Torx wrench (T50) to 11-18 ft. lbs. (15-25 Nm).
    • Both the left and right side lids to the steering wheel
    • Lower lid to the steering wheel and connect the driver's air bag module connector
  18. Refill the cooling system.
  19. Connect the positive (+) battery cable; then, the negative (() battery cable.
  20. Evacuate, charge and leak test the air conditioning system refrigerant.
  21. Operate the engine to normal operating temperatures; then, check the climate control operation and check for leaks.

Nov 19, 2010 | 2002 Nissan Sentra

3 Answers

Looking to replace heater core


Cherokee, Grand Cherokee, 1999-2005

Removal & Installation
  1. Disconnect and remove the negative battery.
    CAUTION After disconnecting the negative battery cable, wait 2 minutes for the driver-s/passenger-s air bag system capacitor to discharge before attempting to do any work around the steering column or instrument.
  2. Drain the cooling system into a clean container for reuse.
  3. Remove the instrument panel by performing the following procedure:
    1. Turn the steering wheel in the straight-ahead position.
    2. Remove the knee blocker from the instrument panel.
    3. Remove the steering column; do not remove the air bag module, the steering wheel or switches from the steering column.
    4. From under the driver-s side of the instrument panel, disconnect the following items:

      Instrument panel wiring harness connector from the 100-way wiring harness connector at the left side of the inner panel. Side window demister hose at the heater/air conditioning housing demister/defroster duct on the driver-s side.
    5. Remove the glove box.
    6. Reaching through the glove box opening, disconnect the following items:

      Two halves of the heater/air conditioning system vacuum harness connector. Instrument panel wiring harness connector from the heater/air conditioning system wiring harness connector. Instrument panel wiring harness connector from the passenger-s side air bag module wiring harness connector. Side window demister hose at the heater/air conditioning housing demister/defroster duct (passenger-s side). Two halves of the radio antenna coaxial cable connector. Two instrument panel wiring harness connectors from the passenger air bag ON/OFF switch wiring harness connector. Passenger-s side air bag ON/OFF switch wiring harness from the retainer clip on the plenum bracket that supports the heater/air conditioning housing just inboard of the fuse block module. Two lower passenger-s side air bag module bracket-to-dash panel nuts.
    7. Remove the upper cover from the instrument panel.
    8. Remove the 3 instrument panel-to-door hinge pillar screws.
    9. Remove the 4 upper instrument panel-to-dash nuts.
    10. Using an assistant, remove the instrument panel from the vehicle.
  4. If equipped with air conditioning, discharge and recover the air conditioning system refrigerant.
  5. Disconnect the refrigerant lines from the evaporator. Plug the refrigerant openings to prevent evaporation.
  6. Disconnect the heater hoses from the heater core tubes.
  7. Disconnect the heater/air conditioning system vacuum supply line connector from the T-fitting near the heater core tubes.
  8. In the engine compartment, remove the 5 heater/air conditioning housing-to-chassis nuts. If necessary, loosen the battery hold-downs and reposition the battery for access.
  9. Remove the cowl plenum drain tube from the heater/air conditioning housing stud; it-s located behind the cylinder head on the cowl.
  10. From the bottom of the heater/air conditioning housing, remove the floor duct.
  11. On the passenger side, remove the heater/air conditioning housing-to-plenum bracket screw.
  12. Pull the heater/air conditioning housing down far enough to clear the defrost/demist and fresh air ducts, then, rearward far enough to clear the mounting studs and the evaporator drain tube to clear the dash panel holes.
  13. Remove the heater/air conditioning housing assembly from the vehicle.
  14. Remove the heater/air conditioning housing upper case.
  15. Lift the heater core from the lower half of the heater/air conditioning housing.
To install:
  1. Assemble the heater core into the lower half of the heater/air conditioning housing.
  2. Install the heater/air conditioning housing upper case.
  3. Install the heater/air conditioning housing assembly to the vehicle.
  4. On the passenger-s side, install the heater/air conditioning housing-to-plenum bracket screw.
  5. At the bottom of the heater/air conditioning housing, install the floor duct.
  6. Install the cowl plenum drain tube to the heater/air conditioning housing stud; it-s located behind the cylinder head on the cowl.
  7. In the engine compartment, install the 5 heater/air conditioning housing-to-chassis nuts.
  8. Connect the heater/air conditioning system vacuum supply line connector to the T-fitting near the heater core tubes.
  9. Connect the heater hoses to the heater core tubes.
  10. Connect the refrigerant lines to the evaporator.
  11. If equipped with air conditioning, evacuate and charge the air conditioning system refrigerant.
  12. Install the instrument panel by performing the following procedure:
    1. Using an assistant, install the instrument panel to the vehicle.
    2. Install the 4 upper instrument panel-to-dash nuts.
    3. Install the 3 instrument panel-to-door hinge pillar screws.
    4. Install the upper cover to the instrument panel.
    5. Reaching through the glove box opening, connect the following items.

      Two lower passenger-s side air bag module bracket-to-dash panel nuts. Passenger-s side air bag ON/OFF switch wiring harness to the retainer clip on the plenum bracket that supports the heater/air conditioning housing just inboard of the fuse block module. Two instrument panel wiring harness connectors to the passenger air bag ON/OFF switch wiring harness connector. Two halves of the radio antenna coaxial cable connector. Side window demister hose at the heater/air conditioning housing demister/defroster duct (passenger-s side). Instrument panel wiring harness connector to the passenger-s side air bag module wiring harness connector. Instrument panel wiring harness connector to the heater/air conditioning system wiring harness connector. Two halves of the heater/air conditioning system vacuum harness connector.
    6. Install the glove box.
    7. Under the driver-s side of the instrument panel, connect the following items:

      Side window demister hose at the heater/air conditioning housing demister/defroster duct on the driver-s side. Instrument panel wiring harness connector to the 100-way wiring harness connector at the left side of the inner panel.
    8. Install the steering column.
    9. Install the knee blocker to the instrument panel.

  13. Connect and remove the negative battery.
  14. Refill the cooling system.
  15. Run the engine to normal operating temperatures; then, check the climate control operation and check for leaks.

Hope helps (remember rated this).

Jun 25, 2010 | 2001 Jeep Grand Cherokee

2 Answers

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