Carrier 40GXQ Air Conditioner User Manual


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22
DIAGNOSTIC CHARTS (CONT.)
Trace connections from
OD board. Connections
ok?
Motor ok.
Fix connection
No
Yes
Yes
No
Replace Motor
No
Visually confirm that fan
blades and outdoor coil
are not blocked.
Clear blockage
Yes
Check motor windings.
Ok?
Trace connections from
OD board. Connections
ok?
Motor ok.
Fix connection
No
Yes
Yes
No
Replace Motor
No
Visually confirm that fan
blades and outdoor coil
are not blocked.
Clear blockage
Yes
Check motor windings.
Ok?
A09370
Fig. 38 – Motors
Check RV connection on
outdoor board. Ok?
Clean or repair the
connection
No
Yes
Yes
Check RV output on outdoor
board. Ok?
No
Replace outdoor board
Replace reversing valve.
Yes
Check RV solenoid. Ok? Replace solenoid
No
Check RV connection on
outdoor board. Ok?
Clean or repair the
connection
No
Yes
Yes
Check RV output on outdoor
board. Ok?
No
Replace outdoor board
Replace reversing valve.
Yes
Check RV solenoid. Ok? Replace solenoid
No
A09371
Fig. 39 – Reversing Valve
38/40GXC(Q)
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