Operating instructions

ManualsBrandsDometic ManualsHeat Pump630025

5. Connect the

"ORANGE""ORANGE"

"ORANGE" wire from the air condi-

tioner to the

"G""G"

"G" terminal on the thermostat.

6. Push the thermostat wires into hole in wall and fill

excess hole with insulation.

7. Mount thermostat base to the wall with screws

provided.

8. Check all thermostat wires on base to ensure they

are completely clear of the bimetal coil of the

thermostat. Adjust if necessary.

9. Replace thermostat cover.

THERMOSTAT BASETHERMOSTAT BASE

THERMOSTAT BASE

C.C.

CONTROL BOARDCONTROL BOARD

CONTROL BOARD

On electronic units two types of control boards have been

used. They are 115 AC volt and DC volt controlled.

1)1)

115 AC VOLT CONTROLLED115 AC VOLT CONTROLLED

115 AC VOLT CONTROLLED

NOTENOTE

NOTE: The PAL tester with the air conditioning module

attached, will allow for proper testing of communication

integrity between the control board and main board. The

PAL and the AIR CONDITIONER MODULE are available

from your Dometic parts distributor.

This control board is a signal receiver and completer. All

power is supplied by the 115 AC volt main board. With

the power switch ON, the FAN and MODE LED's will

illuminate. To check the control board, first verify the

power switch is on. Next, move the fan switch to all

positions. The LED for each position should light. Next,

move the mode switch to all positions. The LED for each

position should light. If all the LED's light when switches

are changed, the control board is good. If a LED does

not light when switch is at that position, check the cable

connections for a bent pin or improper connection. Also,

check for any discolored or burnt areas on the board. If

a discolored or burnt area is found correct the short in

the cable before installing a new control board. If all

lights illuminate and no discoloration or burnt area is

found, the control board does NOT need to be replaced.

If nothing operates on the air conditioner, remove the return

air grille assembly and verify the red, orange, yellow and

blue wires are properly connected (red to red, orange to

orange, etc.). Next disconnect the red wires and check for

12 volt D.C. between red wire from roof section and the

orange or blue wire from roof section. If no voltage is

received, refer to section 4.5. If voltage is received, the

problem lies with the thermostat or thermostat wires.

Next disconnect all four wires (red, orange, yellow and

blue) from the thermostat. With the thermostat set on

COOL mode, the FAN mode set on AUTO and HIGH, and

the temperature selector set lower than room temperature,

check for continuity between:

terminal RC (red wire) and terminal Y (yellow wire),

and RC (red wire) and terminal G (orange wire)

and RC (red wire) and terminal H (blue wire).

If continuity is achieved on each, next set FAN switch to

LOW. Continuity should NOT be present between terminal

RC and terminal H, but present between the other terminals

(Y and G) and terminal RC.

If all the previous checks are good, the thermostat is good.

Do not replace it. If any one of these checks are not correct,

replace the thermostat.

115 VOLT AC CONTROLLED115 VOLT AC CONTROLLED

115 VOLT AC CONTROLLED