Codes de défaut couverts
81-14, 81-54
Applicable to 4 and 5 ton models only with multiple reactors. This fault occurs when current in PFCM circuits is not balanced. It is most likely caused by a disconnected or faulty reactor. The VFD will shut down and attempt to restart after each occurrence of code 81-14. After 2 occurrences within 10 minutes, code 81-54 is set and system is locked out for 4 hours.
Disconnect and measure resistance of both reactors in system. As reactor charges the resistance will be reduced to 0. If measurement is open, replace reactor. Otherwise replace VFD.
Pages de dépannage ACHPVSR454-02SM.