Service manual

16
12A.1 No Cooling; Cooling Mode
No Green L.E.D. light
F/FY Circuit Open to The Thermostat
Note: The green light on the board has some new functions on the 6535 “A” model. If the light is on solid,
everything is OK. If the light is blinking slowly, the unit is in a 3 minute time delay. If the light
is blinking fast, there is either no line voltage to Circuit 1 or one of the thermisters are open.
If the light is not on at all there is no 12VDC power to the thermostat or the PC Board.