– 43 –
NO
NO
YES
YES
* Refer to Characteristics-2.
Is 230V applied to
terminal of 4-way valve coil
in heating operation?
Is 230V applied to
terminal of 4-way valve coil
in heating operation?
Is wiring normal?
Especially wiring connection of
CN01 of CDB P.C. board and CN13
of IPDU P.C. board (Red leads)
Is flow of P.M.V. normal?
Check CDB P.C. board.
Correct connection of connector.
Replace TC sensor.
* Refer to Characteristics-2.
Check indoor P.C. board.
Defect
®
Replace
Replace TC sensor.
Are characteristics
of TC sensor resistance
value normal?
Check and replace P.M.V.
Outdoor P.C. board error
®
Replace
Check 4-way valve.
Defect
®
Replace
4-way valve coil
Defect
®
Replace
Is operation of
4-way valve normal?
Is there continuity to
coil of 4-way valve?
NO
Check 4-way valve.
Defect
®
Replace
Check CDB P.C. board.
Defect
®
Replace
Check wiring.
Correct
YES
NO
NO
NO
NO
YES
NO
YES
YES
NO
YES
No problem
YES
NO
YES
Check indoor P.C. board.
Defect
®
Replace
Is connection of TC sensor connector
(Indoor P.C. board CN101) normal?
Are characteristics of
TC sensor resistance value normal?
In case of SM56, SM80
In case of SM110, SM140
( )
[P19 error]/[08 error]
• In cooling operation, if high pressure is abnormally raised, [P19 error]/[08 error] may be displayed. In this
case, remove cause of pressure up and then check again referring to the item [P04 error]/[21 error].
[F02 error]/[0d error]
