38MBR: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
18
DIAGNOSIS AND SOLUTION
Outdoor Unit Error Display
Table 15 — Diagnostic Guide for Outdoor Units
NO. PROBLEMS ERROR CODE SOLUTION
1 Communication malfunction between indoor and outdoor units E1 Page 22
2 Current overload protection F0 Page 21
3 Outdoor ambient temperature sensor (T4) malfunction F1 Page 26
4 Condenser coil temperature sensor (T3) malfunction F2 Page 26
5 Compressor discharge temperature sensor (T5) malfunction F3 Page 26
6 Outdoor unit EEPROM parameter error F4 Page 20
7 Outdoor fan speed malfunction F5 Page 25
8 Inverter module (IPM) malfunction P0 Page 27
9 Over-voltage or under-voltage protection P1 Page 31
10 Compressor top high temperature protection (OLP) P2 Page 32
11 Low ambient temperature cut off in HEATING mode P3
Refer to Indoor Unit Service Manual
12 Compressor drive malfunction P4 Page 33
13 High temperature protection of indoor coil in HEATING mode J0 Page 35
14 Outdoor temperature protection of outdoor coil in COOLING J1 Page 36
15 Temperature protection of compressor discharge J2 Page 37
16 PFC module protection J3 Page 38
17 Communication malfunction between control board and IPM board J4 Page 39
18 High pressure protection J5 Page 40
19 Low pressure protection J6 Page 41
20 Outdoor IPM module temperature sensor malfunction P7 Page 34
21 AC voltage protection J8 Page 42
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