Alarm codeOH1
Overheat protection has been triggered due to excessive heat sink temperature or cooling fan failure. The manual lists no action for this code.
- Model
- Fuji Electric FRENIC-Eco
- Display shows
- Overheat protection (OH1)
- Type
- Alarm code
- Source
- Manual p. 206
What OH1 means
Overheat protection p. 206
Common causes
- - Stops the inverter output upon detecting excess heat sink temperature in case of cooling fan failure or overload. p. 206
- - Detects a failure of the internal air circulation DC fan and alarm-stops the inverter (For models of 45 kW or above in 200 V series, 55 kW or above in 400 V series) p. 206
- Stops the inverter output upon detecting an excessively high ambient temperature inside the inverter caused by a failure or an overload condition of the cooling fan. p. 206
If OH1 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Fuji Electric service.
This page summarises what the manufacturer’s manual says about OH1; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Fuji Electric. Found a mistake? Report an error.