Mã lổi Của máy Lạnh RITTAL - và cách khắc phục

Display screen	System message	Possible cause	Measures to rectify the fault
A01	Enclosure door open	Door open or door limit switch incor- rectly positioned	Close door, position door limit switch cor- rectly, check connection if necessary
A02	Internal temperature of enclosure too high	Cooling capacity inadequate/unit un- dersized Error as a consequence of messages A03 to A17.	Check cooling capacity
A03	Filter monitoring	Filter mat soiled	Clean or replace; reset the e-Comfort controller
A04	Ambient temperature too high/low	Ambient temperature outside permissi- ble operating range (+10°C to +60°C)	Raise or lower the ambient temperature (e.g. heat or ventilate the room)
A05	Icing hazard	Operational display in case of icing haz- ard. Evaporator coil fan may be mechani- cally blocked, defective, or cold air out- let obstructed.	Set the enclosure interior temperature to a higher value. Check the evaporator fan; release or exchange if necessary.

Display screen	System message	Possible cause	Measures to rectify the fault
A06	PSAH pressure switch	Ambient temperature too high	Lower the ambient temperature; reset the e-Comfort controller
		Condenser soiled	Clean the condenser; reset the e-Comfort controller
		Filter mat soiled	Clean or replace; reset the e-Comfort controller
		Condenser fan defective	Replace; reset the e-Comfort controller
		E-valve defective	Repair by refrigeration engineer; reset the e-Comfort controller
		PSAH pressure switch defective	Refrigeration engineer to exchange reset the e-Comfort controller
A07	Evaporator coil	Lack of refrigerant; sensor in front of or behind condenser defective	Repair by refrigeration engineer; reset the e-Comfort controller
A08	Condensate warning	Condensate discharge kinked or blocked	Check condensate drainage; correct any kinks or blockages in the hose
		Only for units with optional condensate evaporation	Check the evaporation unit, replace if neces- sary
A09	Condenser fan	Blocked or defective	Clear the blockage; replace if necessary
A10	Evaporator fan	Blocked or defective	Clear the blockage; replace if necessary
A11	Compressor	Compressor overloaded (internal wind- ing protection)	No action required; Unit switches on again independently
		Defective (check by measuring the winding resistance)	Replace by a refrigeration engineer
A12	Condenser tempera- ture sensor	Open or short-circuit	Replace
A13	Ambient temperature sensor	Open or short-circuit	Replace
A14	Icing temperature sen- sor	Open or short-circuit	Replace
A15	Condensate warning temperature sensor	Open or short-circuit	Replace
A16	Internal temperature sensor	Open or short-circuit	Replace
A17	Phase monitoring	For three-phase devices only: Incorrect rotary field/phase absent	Swap two phases
A18	EPROM error	New board installed incorrectly	Software update needed (only following board installation with more recent soft- ware): Enter the programming level with Code 22; press button 1 and confirm with "Set" until "Acc" appears. Next, disconnect the unit from the mains and reconnect.
A19	LAN/Master-Slave	Master and slave not connected	Check setting and/or cable