Carrier 40TGV0131UP Service Manual page 62

[P10 error]
Is connection of
float switch connector
(Indoor control board CN34)
normal?
YES
Does float switch work?
YES
Does drain pump work?
YES
Check the drain pipe, etc.
∗ Check that voltage of 1-2 pin of CN504 on the indoor P.C. board is +12V. (1 pin is plus (+).)
[F10 error]
Is connection of TA sensor connector
(CN104 on indoor P.C. board) correct?
YES
Are characteristics of
TA sensor resistance value normal?
YES
Check indoor P.C. board (MCC-1643).
Defect → Replace
NO
NO
Is circuit wiring normal?
NO
Is power of
drain pump turned on? ∗
YES
Replace drain pump.
Check wiring.
NO
NO
∗ Refer to Characteristics-1.
YES
NO
Replace drain pump
N O
and indoor P.C. board
(MCC-1643).
Correct connection of connector.
- 62 -
Correct connection
of connector.
Check indoor P.C. board
(MCC-1643).
Defect → Replace
Check and correct wiring
and wire circuit.
Replace TA sensor.