Component Maintenance Manual
12037 N Highway 99
Seminole, OK 74868
Phone (405) 382-0731
Fax (405) 382-0737
http://www.enviro-ok.com
C. System Operates But Does
Not Cool
1. Low refrigerant charge
2. Overcharged system cutout
2. Reclaim refrigerant as required
6. Failed expansion valve(s)
7. Evaporator blower switch failed
8. Evaporator blower motor failed
9. Evaporator blower failed
10. Evaporator blows circuit
breaker
12. Evaporator module air inlet
clogged
13. Expansion valve inlet clogged
14. Excessive moisture in system
14. Replace receiver dryer
15. Excessive oil in system
1. Blower wheel out of round
2. Blower wheel hitting scroll
3. Defective blower motor bearing
4. Loose mounting bracket
2. Drive belt hitting cover
2. Align belt & adjust bracket
3. Motor fan hitting shroud
5. Defective drive pulley
7. Loose mounting hardware
F. No Low Evap. Fan speed
(Hi Speed Ok)
Table 3 Trouble Shooting List