Wolf WRS-K Installation And Operating Instructions Manual page 59

Alarm messages
Frost thermostat responded
(AL13)
Frost prot. temp. vent. air
below set value (AL14)
Temperature limiter,
electric heater bank (AL15)
Safety temperature limiter
elec. htr bank (AL16)
Fault, pump, cold water
bank (AL17)
Central fault ext
refrigeration unit (AL18)
Fire alarm system
responded (AL19)
Vent. temp sensor faulty or
not connected (AL20)
Vent. air hum. sensor faulty
or not connected (AL21)
Room temp sensor faulty or
not connected (AL22)
Indoor air humidity sensor
faulty or not connected
(AL23)
Extr. air temp sensor faulty
or not connected (AL24)
Extr. air hum. sensor faulty
or not connected (AL25)
3062878_201707
14. Fault messages
Effects Cause
Fans are switched Temperature captured
off; outdoor air at the thermostat below
damper is closed; limit
heating circuit pump
starts; heating circuit
mixer is opened; heat
source receives a
demand
Fans are switched Supply air temperature
off; outdoor air too low
damper is closed;
heating circuit pump
starts; heating circuit
mixer is opened; heat
source receives a
demand. With electric
heater bank: System
off
The system shuts Electric heater bank
down after a delay temperature too high
The system shuts Electric heater bank
down after a delay temperature too high
Pump off, cooling An overload relay of an
valve closed, demand external cooling circuit
chiller off pump has responded
Chiller is switched off Cooling unit / direct
evaporator has
recognised a fault;
cooling unit / direct
evaporator faulty
Subject to parameter Smoke detector has
settings, either responded
system OFF, only
message or smoke
extraction
The system shuts Sensor or lead faulty
down
Humidifier shuts Sensor or lead faulty
down; system
continues to operate
The system shuts Sensor or lead faulty
down
Humidifier shuts Sensor or lead faulty
down; system
continues to operate
If an extract air / Sensor or lead faulty
supply air cascade
is installed:
System OFF
otherwise
message only
Humidifier shuts Sensor or lead faulty
down; system
continues to operate
Remedy
Check heating medium;
check heating circuit pump;
check frost stat, acknowledge
fault message
Check heating medium;
check heating circuit pump;
check parameters, acknowledge
fault message
Check heater bank;
acknowledge fault message
Check heater bank;
acknowledge fault message
Reset overload relay; check
power drawn by the pump;
acknowledge fault message
Check cooling unit / direct
evaporator; acknowledge fault
message
Acknowledge fault message
Check sensor and lead,
acknowledge fault message
Check sensor and lead,
acknowledge fault message
Check sensor and lead,
acknowledge fault message
Check sensor and lead,
acknowledge fault message
Check sensor and lead,
acknowledge fault message
Check sensor and lead,
acknowledge fault message
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