Fehlercodes: H05_H15_H25_ECOi_ME1

 

Alarm Code H05, H15, H25
Alarm meaning Compressor 1 discharge temperature sensor disconnected; Compressor 2 discharge temperature sensor disconnected; Compressor 3 discharge temperature sensor disconnected
Alarm conditions
  • This alarm occurs when the discharge sensor temperature detector is not inserted into the tube’s sensor holder, or when the sensor itself has suffered some kind of malfunction other than a cut wire.
  • When outdoor air temperature is 10°C or higher: Alarm occurs if the temperature detected by the discharge sensor has changed by less than 2°C when the compressor has operated for 10 minutes immediately after start.
  • When outdoor air temperature is below 10°C: Alarm occurs if the temperature detected by the discharge sensor has changed by less than 2°C when the compressor has operated for 30 minutes immediately after start.
Probable cause
  1. Discharge sensor temperature detector is not inserted into the tube’s sensor holder.
  2. Discharge sensor itself has suffered some kind of malfunction other than a cut wire.
Check
  1. Check that the discharge temperature sensor is inserted into the sensor holder.
  2. Check that sufficient heat-conducting putty is applied.
  3. Remove the discharge sensor from the sensor holder and expose the sensor to the outside air for approximately 5 minutes. Check that the temperature detected by the sensor changes to match the outside air temperature. (However the sensor cannot detect temperatures at or below 0 °C.)
Correction
  1. Install the sensor into the holder, and apply sufficient heat-conducting putty.
  2. If the sensor is malfunctioning, replace it.
Example
Notes The discharge temperature sensor is generally a sensor intended for accurate detection of high temperatures. Therefore, it will not accurately detect the temperature if the temperature at the measurement point is 20 °C or below.