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[P19 error]
Check 4-way valve
Defect → Replace
Check and replace
electron expansion valve.
Replace TC sensor.
Correct connection of connector.
Replace TC sensor.
Check and
correct circuit.
Check indoor P.C. board.
Defect → Replace
Check CDB P.C. board.
Defect → Replace
Check indoor P.C. board.
Defect → Replace
Check CDB P.C. board.
Is connection of TC sensor connector
(Indoor P.C. board CN101) normal?
Are characteristics of
TC sensor resistance value normal?
∗
Is operation of
4-way valve normal?
Is 4-way valve
coil terminal 200V
4-way valve coil
conduction?
Are characteristics
of TC sensor resistance
value normal?
∗
Is flow of refrigerant
by electron expansion
valve normal?
Is circuit cable normal?
Connection of CN01 on CDB
and CN13 on IPDU
(Both connectors are Red)
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Defect
Normal
∗
Refer to 10-2-6. Relational graph of
temperature sensor resistance value
and temperature Characteristics-2.
• 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]