Ruck ETA K 1200 F O, Assembly And Operating Manual, Page: 53 / 68

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Faults displayed Type of fault and repair
Error frost protection
» The air temperature has fallen below the value set on the antifreeze thermostat. The fans will be switched off, the air
flaps closed, the heating valve fully opened and the circulating pump switched on.
» Check fuse F2.
»
After the failure reason is remedied, the failure must be confirmed with „OK“.
Fault in the safety thermostat - electric heating element temperature monitoring
»
The housing temperature is higher than 75 °C. The control circuit is broken, the electric heater is switched off. Pos -
sible cause: defective supply air valve, fan has failed, etc.
»
Repair supply air valve, check fuses F2.
»
After the failure reason is remedied, the reset button of the safety thermostat has to be reset manually, and the failure
has to be confirmed at the control unit with „OK“.
Fault, fan thermal contact
» The thermal contact has been tripped, device will be switched off. Possible cause: motor overheating or defective.
»
The power supply must be switched off at the main switch for at least 20 s. Check fuse F2, replace the motor if
necessary.
»
After the failure reason is remedied, the failure must be confirmed with „OK“.
Error fan
»
A signalling relais of a fan has been tripped.
» Switch the unit off, check wiring and fans and if needed, replace damaged fan.
»
After the failure reason is remedied, the failure must be confirmed with „OK“.
Fire protection signal
»
The fire protection contact is open. The fire detector has tripped.
» After the fire detection has been remedied, you have to confirm with „OK“.
Insufficient temperature of supply air
»
The maximum set supply air temperature (12 °C) was undershot longer than 30 minutes.
»
After the failure reason is remedied, the failure must be confirmed with „OK“.
Excess temperature, supply air
»
The maximum supply air temperature of 80 °C was exceeded longer than 10 sec. or the cable of the air supply tem -
perature sensor is broken.
»
Switch off the device, check fans.
»
After the failure reason is remedied, the failure must be confirmed with „OK“.
No release
»
The release contact is not closed.
»
Close the release contact. The unit can then be started.
CONTACT
FIRE PROTECTION
FAULT
FAN
FAULT
FAN TEMP
FAULT
SAFTY THERMOSTAT
FAULT
FROST PROTEC
FAULT
TEMP.LOW SUP.AIR
FAULT
TEMP.HIGH.SU.AIR
NOT ENABLE