Omega OTEC ERVD Series, Service Manual

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15
6
. Troubleshooting
6
.1 Lamp flashes
No. Operation lamp Timerlamp Defrosting lamp Alarmlamp Explanation
1
★ ○ ○ ○
T4 sensor error
2
★ ★ ○ ○
T1 sensor error
3
★ ○ ★
Current protection
4
★ ○ ○ ★
Phase absent, phase error
Note:
●：
Light,
○：
Extinguish,
☆：
Slow flash,
★：
Quick flash
ERVD010, ERVD015, ERVD020, ERVD030, ERVD050, ERVD060
ERVB090 , ERVB120
T1 temperature sensor: site at the return air cavity.
T4 temperature sensor: site at the outdoor air inlet cavity.