Outdoor Unit Diagnostic Guide - Carrier 38MHRC Service Manual

Outdoor Unit Diagnostic Guide

OPERATION LAMP TIMER LAMP

1 time

2 times

3 times

4 times

5 times

6 times

7 times

1 time

2 times

3 times

4 times

5 times

6 times

1 time

2 times

3 times

4 times

5 times

6 times
28
Table 13 — Outdoor Unit Diagnostic Guide
DISPLAY
X E0
X E1
X E2
X E3
X E4
X E5
X EC
O F0
O F1
O F2
O F3
O F4
O F5

P0

P1

P2

P3*

P4

P5
O (light)
Specifications subject to change without notice.
Indoor unit EEPROM parameter error
Indoor / outdoor units communication error
Zero-crossing signal detection error
Indoor fan speed has been out of control
Indoor room temperature sensor T1 open circuit or short circuit
Evaporator coil temperature sensor T2 open circuit or short circuit
Refrigerant leakage detection
Overload current protection
Outdoor ambient temperature sensor T4 open circuit or short circuit
Condenser coil temperature sensor T3 open circuit or short circuit
Compressor discharge temperature sensor T5 open circuit or short
circuit
Outdoor unit EEPROM parameter error
Outdoor fan speed has been out of control
IPM malfunction or IGBT over-strong current protection
Over voltage or over low voltage protection
High temperature protection of IPM module or compressor top
Outdoor ambient temperature too low.
Inverter compressor drive error
Indoor units mode conflict (multi-zone ONLY)
X (off)
 (flash)
LED STATUS
SG-38MHRC-01