TCGB0070 rev.3 - 04/2012
162
13 Troubleshooting
13.1 On screen during abnormal operation
Alarm Code Indication on LCD user’s interface:
Alarm indication
Alarm code
13.2 Alarm codes
Alarm
Code
Retry
Stop
Code
Origin
Detail of Abnormality
Main cause
02
–
Outdoor
Activation of Outdoor Unit Protection Device
(Except for Alarm Codes 41, 42)
High-pressure interrupting device activated
03
–
Outdoor Transmission Error
Outdoor fuse meltdown, Indoor/outdoor connection wiring
(breaking, wiring error, etc.)
04
–
Outdoor Inverter Transmission Abnormality
Control PCB – Inverter PCB connection wiring (breaking,
wiring error, etc.)
05
–
Outdoor Power Phase Detection Abnormality
Power source wiring open phase in Indoor Units
06
18
Outdoor Undervoltage, Overvoltage
Outdoor PCB abnormality, inverter PCB abnormality, DM,
CB abnormality
07
16
Outdoor Abnormal Decrease of Discharge Gas
Superheat Degree
Excessive refrigerant, expansion valve open-locked, Fan
motor locked
08
15
Outdoor Compressor-Top Temperature Over-Increase
Shortage or leakage of refrigerant, piping clogging, Fan
motor locked
11
–
Indoor
Water Inlet Thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
12
–
Indoor
Water Outlet Thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
13
–
Indoor
Indoor Liquid Pipe Temperature Thermistor
Abnormality
Loose, disconnected, broken or short-circuited connector
15
–
Indoor
Water Outlet C2 thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
14
–
Indoor
Indoor Gas Pipe Temperature Thermistor
Abnormality
Loose, disconnected, broken or short-circuited connector
16
–
Indoor
Water DHW Thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
17
–
Indoor
Auxiliary Thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
18
–
Indoor
Water Outlet Boiler Thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
19
–
Indoor
Water Outlet HP Thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
20
–
Outdoor Compressor-Top Temperature Thermistor
Abnormality
Loose, disconnected, broken or short-circuited connector
22
–
Outdoor Outdoor Temperature Thermistor Abnorma-
lity
Loose, disconnected, broken or short-circuited connector
24
–
Outdoor Outdoor Heat Exchanger Liquid Pipe
Thermistor Abnormality
Loose, disconnected, broken or short-circuited connector
31
–
Outdoor Indoor/Outdoor Combination Setting Error
Outdoor/Indoor Unit capacity setting error, Indoor total
capacity excessively large/small