Dantherm DanX 1 XD, User Manual

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4. CONTROLS
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4.5.2 Critical alarms
A critical alarm will either stop the total unit (heat pump and fans) or just the heat pump. The
unit can first be started up again when the alarm has been acknowledged. Critical alarms
are:
4.5.3 Non Critical alarms
A non-critical alarm will not stop the unit, but it is a reminder to check the part (filter) which is
in alarm. Non critical alarms are:
Alarm point Description
Heating_Coil Frost danger for LPHW coil, or OT for electrical heating coil
Fire_Alarm Fire thermostat on supply or return air side has switched off
Fan_Alarm Return or supply fan overload
HP_LP_Alarm HP/LP pressure compressor alarm (Only units with HP)
Alarm point Description
Filter_Dirty Outdoor or exhaust air filter should be checked