Fault Codes / Wolf

Wolf — Fault Codes

35 codes

CHA / BWL

012 — Flow sensor defective.
015 — Outdoor sensor fault.
017 — Flow sensor fault.
052 — Water shortage in heating circuit (low pressure).
077 — eBus / bus cable communication error.
092 — High pressure protection refrigerant circuit.
099 — Low pressure protection refrigerant circuit.
104 — Fan fault.
105 — Compressor fault.
108 — Low pressure fault (refrigerant circuit).
109 — High pressure fault (refrigerant circuit).
111 — Hot gas temperature fault.
112 — Compressor overcurrent / motor protection.
114 — Wrong phase sequence / rotation direction.
121 — 4-way reversing valve not switching.
701 — Low pressure fault (NDS) — low pressure switch in the refrigerant circuit triggered.
702 — Low pressure spread (NEG) — refrigerant circuit low pressure too low.
703 — Anti-freeze protection (S-FRO) triggered — heat pump running but temperature drops below the anti-freeze limit.
704 — Hot gas fault (S-HG) — maximum temperature in the hot gas refrigerant circuit exceeded.
705 — Fan motor protection (S-MOT) has triggered.
706 — Brine/well water circulation pump motor protection (S-MOT) has triggered.
707 — Heat pump coding (S-CW) — break or short circuit in the coding bridge.
708 — Return sensor (S-TRL) — return sensor open or short circuit.
709 — Flow sensor (S-TVL) — flow sensor open or short circuit.
710 — Hot gas sensor (S-THG) — hot gas sensor open or short circuit.
711 — Outdoor temperature sensor (S-TA) — open/short circuit, controller falls back to a fixed -5°C value.
712 — DHW sensor (S-TBW) — storage tank sensor open or short circuit.
713 — Heat source inlet sensor (S-TWE) — heat source sensor open or short circuit.
715 — High pressure cutoff (HDA) — high pressure switch in the refrigerant circuit triggered, automatic reset.
716 — High pressure fault (HDS) — repeatedly triggered in the refrigerant circuit (no longer auto-resets).
717 — Heat source flow (S-DFS) — DHW flow switch or phase sequence monitoring (on Z-unit).
727 — Brine pressure (S-SDP) — brine pressure switch has triggered.
729 — Rotating field (S-VÜW) — compressor produced no output after switching on.
733 — Anode fault (S-PEX) — impressed current anode fault or DHW tank not filled.
739 — CAN error: heat pump missing (S-CAN1).