
54
sensor error
15
●
★
○
Internal coil
sensor error
Internal coil sensor, main internal control
panel.
16
○
★
●
Indoor fan error Mechanical jam of fan, internal fan, main
internal control panel.
17
○
★
○
Refer to tooling
display for other
errors
Entire set of external controller.
18
●
●
★
Compressor cap
sensor error
System pressure, compressor cap sensor
(protection switch), main external control
panel.
19
●
○
★
Recirculated
sensor error
Recirculated sensor, four-way valve switch
error, main external control panel.
20
○
●
★
※
Compressor
overpower
protection
Power voltage, module panel, main
external control panel.
21
○
○
★
※
Over current
protection
Power voltage, system pressure, module
panel, main external control panel.
22
●
●
○
Exhaust sensor
error
System pressure, exhaust sensor, main
external control panel.
23
●
○
●
※
Cooling
overload
protection
Condenser, external fan, capillary, external
coil sensor, main external control panel.
24
○
●
●
※
Indoor high
temperature
heating protection
Evaporator, internal fan, thin unit
connection pipe, internal coil sensor, main
internal control panel.
25
●
○
○
※
Indoor
cooling freezing
protection
Evaporator, internal fan, capillary, internal
coil sensor, main internal control panel.
26
○
●
○
Compressor shell
temperature
protection
Same as "18 Compressor cap sensor error".
27
○
○
●
※
OVP or UPV
error
Power voltage, reactor, module panel, main
external control panel.