41
Section C - Components, cont’d.
FIG. C37
NO on compressor relay is black wire and is compres-
sor circuit.
Terminal T1 is a black wire and is High Fan circuit.
Terminal T2 is jumpered to T1 terminal.
Terminal T3 is a red wire and is Low Fan circuit.
Note:
DO NOT use a voltmeter to do these checks as it
will give erroneous readings.
If the circuit is completed and that component is not oper-
ating, the problem is in the wiring to the component or the
component.
4. Single Basement Heat Pump
To verify circuits are being completed by the AC power
module board, you would first remove the electric box cover
and locate the AC power module board.
FIG. C38
Using a 115 volt incandescent bulb, check from AC white
(common) of incoming 115V AC; one lead from incandes-
cent bulb and the other lead from incandescent bulb to the
terminals listed below to determine if a particular circuit is
completed through the board. If the circuit is completed,
the light will illuminate.
NO on compressor relay is a black wire and is com-
pressor circuit.
Terminal T1 is a black wire and is High Fan circuit.
Terminal T2 is a black wire and is Reversing Valve cir-
cuit. This circuit is energized in cooling mode and
NOT energized in the Heat Pump mode.
Terminal T3 is a red wire and is Low Fan circuit.
Note:
DO NOT use a voltmeter to de these checks as it
will give erroneous readings.
If the circuit is completed and that component is not oper-
ating, the problem is in the wiring to the component or the
component.
5. Dual Basement Air Conditioner and Heat Pump
To verify circuits are being completed by the AC power
module board you would first disconnect the two 9-pin con-
nectors that connect the electric kit to the unit.
Using a 115V incandescent bulb, check from Terminal 4
(white wire) 115V common to the other terminals to deter-
mine if a particular circuit is completed through the board.
If the circuit is completed, the light will illuminate.
FIG. C39
Manual
Compliments
of
Northwest
RV
Supply
Printed
From
http://www.nwrvsupply.com
