Fault Messages - Wolf WRS-K Installation And Operating Instructions Manual

Alarm messages
External fault (AL64)
Smoke detector responded
(AL65)
KGWO burner fault (AL66)
Fault (AL74)
Heat pump
Pump fault
Reheater bank (AL75)
Frost thermostat
Reheater bank responded
(AL76)
Cooling control databus
fault (AL77)
RCS control databus fault
(AL78)
Coil loop control unit
switched off (standby)
(AL79)
BMS outside temperature
implausible (AL 80)
Notice: Alarm messages AL67 - AL73 are alarms for adiabatic cooling and are described in the enclosed assembly/
service instructions WRS-K "Adiabatic Cooling".
3062878_201707

14. Fault messages

Effects Cause
Depending on External assembly faulty Check external assembly;
parameter
System OFF
message only
Subject to parameter Smoke detector has
settings, either responded
system OFF, only
message or smoke
extraction
System shuts down Burner faulty
During heating mode Fault
= system OFF Heat pump
During cooling mode
= HP switches off
Pump off, heating A motor overload relay
valve closed, heat of an external heating
source demand off circuit pump has
responded
System off, reheater Temperature captured
bank pump on, at the thermostat below
reheater bank valve limit
open, heat source
demand on
Cooling control shuts Connection between
down air handling control unit
and cooling control unit
is faulty
RCS control shuts Connection between
down air handling control unit
and RCS control unit is
faulty
Depending on Coil loop control unit
parameter setting switched off via control
System Off, message module.
only
Message only; Value outside the valid
special functions entry range or no value
(night ventilation etc.) change for more than
disabled 24 hours
Remedy
acknowledge fault message
Acknowledge fault message
Check burner and acknowledge
fault
Check heat pump, acknowledge
fault message
Reset motor overload relay;
check power drawn by the pump;
acknowledge fault
Check heating medium;
check heating circuit pump;
check frost thermostat;
acknowledge fault
Check the connection; switch on
cooling control
Check the connection; switch on
RCS control
Switch on coil loop control unit
via control module.
Check the BMS connection,
addressing & logic; acknowledge
fault message
61