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TROUBLESHOOTING & REFERENCES
J-12
ENGLISH
Topic Title
Master Error Code Chart
HIGHWALL CONSOLE COMPACT CASSETTE
Outdoor
Pro-Series
LED Display
(CAC)
Outdoor
Multi-Zone
LED Display
(CAC)
Outdoor
Single-Zone
LED1 Flash
(RAC)
FAULT DESCRIPTION
Digital
Display
Digital
Display
Panel LED Flash or
ID PCB LED Flash
Yellow Timer LED
(PCB LED5)
Green Run LED
(PCB LED1)
1
1 1 Outdoor EEPROM failure F12 F12 2 1
2
2 2 IPM overcurrent or short circuit F1 F1 2 2
/
/ 3 Outdoor alternating current, over current protection F22 F22 2 3
3
/ / Compressor over current during deceleration / / / /
4
4 4 Communication failure between the IPM and outdoor PCB F3 F3 2 4
5
5 5 Module operated overload (compressor overload protection) F20* F20* 2 5
6
6 6 Module low or high voltage F19* F19* 2 6
7
/ 7 Compressor current sampling circuit fault F27 F27 2 7
8
8 8 Overheat protection for discharge temperature F4 F4 2 8
9
9 9 Malfunction of the DC fan motor F8* F8* 2 9
10
10 10 Malfunction of defrost temperature sensor F21 F21 3 0
11
11 11 Suction temperature sensor failure F7 F7 3 1
12
12 12 Ambient temperature sensor failure F6 F6 3 2
13
13 13 Discharge temperature sensor failure F25 F25 3 3
/
/ 14 High outdoor suction temperature F30* F30* 3 4
14
/ / PFC circuit loop voltage / / / /
15
15 15 Communication failure between the indoor & outdoor unit E7 E7 3 5
16
16 16 Lack of refrigerant or discharging F13* F13* 3 6
17
17 17 4-way valve switching failure F14* F14* 3 7
18
18 18 Loss of synchronism detection F11 F11 3 8
/
/ 19 Position detection circuit fault of compressor F28 F28 3 9
19
/ / Low DC or AC voltage / / / /
/
/ 20 Terminal block temp too high F15* F15* 4 0
20
20 / Indoor thermal overload E9 / 4 0
/
21 21 Indoor unit overload protection, heating mode only. E9* / 4 1
/
21 / Indoor coil frosted E5 / 4 1
/
/ 22 Indoor anti-frosting protection E5* / 4 2
22
/ / PFC circuit loop overcurrent / / / /
/
/ 23 Indoor coil temperature (abnormal reading) / / / /
23
23 / Module thermal overload F5* F5* 4 3
24
24 24 Compressor start failure, over-current F2* F2* 4 4
25
25 25 Phase current protection (IPM) F23* F23 4 5
/
26 / MCU reset F9 F9 4 6
26
/ / IPM power supply phase loss (3-phase) / /
27
27 27 Module current detect circuit malfunction F24 F24 4 7
28
/ / Wiring error: Compressor to IPM / / / /
* Hidden indoor error code. LED1 will flash outdoors, but no error will appear on indoor unit display.
To view error code on indoor display, press and hold the Emergency button for 15 seconds.
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