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Reversing Valve
Reversing Valve Diagnosing
Check for Fault Codes
Check fault codes by pressing and holding
MODE
and then press
AUX
. Verify whether fault
7 (Reverse valve fault) code is active. Record
any other faults and clear the codes by pressing
AUX
.
Verify Compressor Operation
Enter Service Mode by pressing and holding
+
and
-
buttons. On entry, the display lights all
LED's. Press
MODE
until CL or HP (depending
on outside temperature) is shown in the display.
Pressing
+
turns the compressor on and pressing
the
-
will turn the compressor off. The indoor coil
should be getting hot or cold depending which
mode was selected.
AUX
key exits Service
Mode.
Verify Reversing Solenoid Valve Resistance
Values
Approximate reversing valve solenoid values can
be checked from the main control board at the
J304 connector.
NOTE
: The resistance values
are depended on supplied voltage.
208/230 VAC
• Pin 1 (
pink
) to pin 2 (
pink
): 1,500 Ohms + or
- 15%.
265 VAC
• Pin 1 (
navy
) to pin 2 (
navy
): 3,110 Ohms +
or - 15%.
Reversing Valve Removal
1. Remove main control board cover and
junction box cover. All screws are 5/16-in.
screws.
Main Control
Board Cover
Junction Box
Cover
2. Remove one 1/4-in. screw from the capacitor
holder. Gently slide the capacitor out of its
clamp.
1/4" Screw
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