Alarm conditions:
Įrenginys fiksuoja šilumokaičio užšąlimą, kai po keturių bandymų atsitirpinti išlieka užšąlimo sąlygos: One of the clauses are not fulfilled after 3 heat exchanger defrost tries.
- Heat exchanger efficiency is below critical value,
- Pressure between heat exchanger is higher than critical value.
Possible causes:
- Defrosting algorithm does not work,
- Temperature sensor failure,
Troubleshooting:
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