37MGRA PH 91 (Low temperature protection of evaporator diagnosis and solution) – Carrier Enterprise Technical Services & Support

Codes de diagnostic couverts

PH 91

Description: When evaporator coil temperature is lower than 0°C in cooling mode or drying mode, the unit stops. It starts again only when the evaporator coil temperature is more than 5°C. Recommended parts to prepare: Connection wires, Evaporator coil temperature sensor (T2), Indoor main PCB Troubleshooting and repair:

Flux de travail de dépannage

PH 91 (Low temperature protection of evaporator diagnosis and solution) workflow — PH91 (Low temperature protection of evaporator diagnosis and solution) workflow

Contrôles diagnostiques associés

Vérification du capteur de température 37MGRA

Source du flux de travail : manuel de service d'origine 37MGRA-02SM PDF. Noms des codes d'erreur recoupés avec 37MGRA-04SI.