Operating instructions

131
Using a 115 volt incandescent bulb, check from terminal 5
(white-common) to the other terminals to determine if a
particular circuit is completed through the board. If the circuit
is completed, the light will illuminate.
Terminal 1 is blue wire and is the compressor circuit
Terminal 2 is black wire and is High Fan circuit
Terminal 3 is yellow wire and is Medium Fan circuit
Terminal 4 is red wire and is Low Fan circuit
Terminal 5 is white wire and is Common 115 V
Terminal 6 is Green/Yellow wire and is casing ground
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 operating,
the problem is in the rooftop unit or the connection is not being
completed through the connector.
B. ROOFTOP HEAT PUMP
To verify circuits are being completed by the AC power module
board you would first disconnect the 6-plug connector from the
electric kit. (Refer to the above illustration)
Using a 115 volt incandescent bulb, check from terminal 5
(white-common) to the other terminals to determine if a
particular circuit is completed through the board. If the circuit
is completed, the light will illuminate.
Terminal 1 is blue wire and is the compressor circuit
Terminal 2 is black wire and is High Fan circuit
Terminal 3 is yellow wire and is reversing valve circuit.
This circuit is energized in cooling mode and not
energized in the heat pump mode.
Terminal 4 is red wire and is Low Fan circuit
Terminal 5 is white wire and is Common 115 V
Terminal 6 is Green/Yellow wire and is casing ground
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
operating, the problem is in the rooftop unit or the connec-
tion is not being completed through the connector.
It is possible to make the above checks on the board, if
necessary.
C. SINGLE BASEMENT AIR CONDITIONER
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.
Using a 115 volt incandescent bulb, check from AC white
(common) of incoming 115V AC; one lead from incandescent
bulb, 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 black wire and is compressor
circuit.
Terminal T1 is black wire and is High Fan circuit
Terminal T2 is jumpered to T1 terminal
Terminal T3 is 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
operating, the problem is in the wiring to the component or
the component.