Question about Heating & Cooling
B zone will not cool. l3 and l4 led's are flashin g at 1 second intervals.
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Posted on Jan 02, 2017
The L3 and L4 lights are blinking means that the filter is dirty and obstructed. You’ll need to clean the filter. Also Inspect whether the evaporator air is blocked, remove the blockage. Check the air intake and outlet ducts of the condenser side are obstructed. Check both of the ducts. Check whether the unit is set on dehumidifying mode. Set at cooling mode, Set at low fan speed Re-set the fan speed at high speed and check.
However, if this doesn't help then it might have happened that the compressor is not runing and the connection to the compressor is cut. Please check the wiring diagram on Pg 22 in this manual---
Comfort-Aire Air Conditioner Manual & wiring diagram
Please post back for any further assistance. If you are satisfied please do accept the solution.
Posted on Aug 02, 2010
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