Carrier RAV-SP180UT-UL Service Manual page 84

[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 4-way: CN504, Under Ceiling: CN68 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.
Defect → Replace
NO
NO
Is circuit wiring normal?
Check and correct wiring
NO
Is power of
drain pump turned on? ∗
YES
Replace drain pump.
Check wiring.
NO
NO
∗ Refer to Characteristics-1.
YES
NO
and wire circuit.
Are connector pins 1 and 2
NO
at drain pump unit side shorted
(Resistance value 0)?
YES
Replace drain pump
and indoor P.C. board.
– 84 –
Correct connection
of connector.
NO
Check indoor P.C. board.
Defect → Replace
Correct connection of connector.
Replace TA sensor.