1060254-UUM-A-0713
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Johnson Controls Unitary Products
BLOWER CARE
Even with good filters properly in place, blower wheels and motors will
become dust laden after long months of operation. The entire blower
assembly should be inspected annually. If the motor and wheel are
heavily coated with dust, they can be brushed and cleaned with a vac-
uum cleaner. If the blower cannot be properly cleaned without removing
it from the furnace, then this service must be performed by a qualified
service agency.
Make sure you DO NOT move the clip on weight on the indoor fan
wheel when cleaning the wheel. This weight is used to balance the
wheel. Moving the weight will cause the fan wheel to vibrate.
TROUBLESHOOTING GUIDE
PROBLEM
CHECK
ACTION TO TAKE
FAULT CODE
No Heat
or
Cooling
1. Thermostat for proper settings.
Set thermostat to proper setting.
-
2. Circuit breakers and fuses.
Reset circuit breakers - Replace blown fuses.
-
3. Check outdoor unit for dirty coil (Cooling).
Clean coil, see “COIL CARE” section.
2
4. Outdoor unit for snow accumulation. (Heating).
Remove loose snow only.
3
5. Indoor unit for dirty filter (Heating).
Clean or replace, see “FILTER CARE” section.
2
6. Emergency heat light status on thermostat.
Check 1 - 5, call qualified service person.
2
Light on = Malfunction
Check 1 - 5, call qualified service person.
-
Light flashing = Malfunction
Check 1 - 5, call qualified service person with fault code.
-
Wet on Floor
or in Furnace
Condensate drain and “P” trap
Remove blockage, usually mold or fungus.
-
