Diagnosis And Solution; Outdoor Unit Error Display - Carrier 38MARB Service Manual

38MARB: Service Manual

DIAGNOSIS AND SOLUTION

Outdoor Unit Error Display

Sizes 12 (115V)
After the power is on, LED1 (blue color) flashes slowly (once per second) when the unit is in standby. The LED flashes quickly (twice per second) if
the unit has an issue.
NO.
1 IPM malfunction or IGBT over - strong current protection
2 Over voltage or too low voltage protection
3 EEPROM parameter error
4 Inverter compressor drive error
5 Inverter compressor drive error
6 Inverter compressor drive error
NO.
1 IPM malfunction or IGBT over - strong current protection
2 Over voltage or too low voltage protection
3 EEPROM parameter error
4 Inverter compressor drive error
5 Inverter compressor drive error
6 Inverter compressor drive error
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 14 — Diagnostic Table Sizes 9K-18K
PROBLEMS
O (light)
Table 15 — Diagnostic Table Sizes 24K- 36K
PROBLEMS
LED3 (GREEN) LED2 (RED)

O
O
X


X (off)  (2.5 Hz flash)
LED2 (GREEN) LED3 (RED)

O
O
X


26
IU DISPLAY
X P0
O P1

E5

P4
O P4

P4
IU DISPLAY
X P0
O P1

E5

P4
O
P4

P4
SOLUTION
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Page 42
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SOLUTION
Page 39
Page 42
Page 27
Page 45
Page 45
Page 45