Troubleshooting - Dantherm ACT-7 Guide De Démarrage Rapide

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Troubleshooting

Only a competent electrician should attempt to rectify electrical supply problems.
Only a competent refrigeration engineer should work on th e refrigeration system.
Symptoms
No air fl ow from room unit, display
off .
No air fl ow from room unit, display
on and showing temperature.
No air fl ow from room unit, display
on, defrost and A/C symbols
showing.
Insuffi cient air fl ow from room unit.
Insuffi cient air fl ow from room unit.
A/C indicator on, defrost symbol
showing.
Insuffi cient air fl ow from room unit.
No cooling.
No cooling.
No cooling.
HP/LP faults.
14
Possible causes
Problem with th e power
supply.
Mode switch in standby
position.
ACT-7 is defrosting.
Blocked air fi lter.
Temperature set too high.
Fan speed dial set to minimum.
HP alarm showing. High
pressure trip.
No water or kinked hoses.
Insuffi cient water.
External heat exchanger unit
mounted in very high ambient
temperature?
Water frozen?
Flashing bucket full symbol.
Condensate pump not
reducing water level.
LP alarm showing. Low
pressure trip.
Loss of refrigerant.
Blocked fi lter.
Action required
Turn on electricity and/or check mains supply fuse.
Change th e position of th e mode switch to fan only
or A/C.
Machine in defrost mode, do not adjust anyth ing,
machine will revert to normal operation aft er ten
minutes.
Clean fi lter.
Lower th e temperature and wait six minutes for time
delay on start-up to elapse.
Change th e position of th e fan speed dial.
Reset alarm as described in resetting alarms section
on page 8.
Top up th e ACT-7 room unit header tank with water/
glycol mixture.
Add glycol (33%) as shown on page 5.
Check th e lines for kinks and remove th em. Check th e
room unit for leaks. Check to see if th e condensate
tube is frozen.
Reset alarm as described in resetting alarms section
on page 8.
Check th e fi lter and clean if necessary as shown on
page 13.
Recurring high pressure and low pressure faults may
indicate th at th ere is an underlying problem th at needs
investigating. Contact th e supplier of th e ACT-7 to
arrange for servicing.
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