Koldwave 5WK07 - Page 21

21
Trouble Shooting Guide Continued
HEAD PRESSURE TROUBLESHOOTING
Too high 1 Condenser dirty, clogged or restricted. 1 Replace condenser coil.
2 Air or non-condensable gases in system 2 Recover refrigerant, install filter/dryer, evacuate system and
weigh in proper charge of virgin refrigerant.
3 Fan blade or motor defective 3 Check and replace.
4 Refrigerant overcharged 4 Recover entire refrigerant charge and weigh in proper charge.
Too low 1 Compressor motor or mechanism defective 1 Replace compressor
2 Capillary tube or strainer restricted 2 Replace restricted capillary tube.
3 Low refrigerant charge 3 Locate refrigerant leak, recover refrigerant, repair leak, install
filter/dryer, evacuate system and weigh in proper charge.
4 Evaporator dirty, clogged or restricted 4 Clean evaporator coil.
5 Leak in system 5 Locate refrigerant leak, recover refrigerant, repair leak, install
filter/dryer, evacuate system and weigh in proper charge.
6 Dirty air filter (air flow restricted) 6 Clean filter .
7 Inlet water temperature below 50°F. 7 Adjust regulator valve. Change water supply.
EVAPORATOR TROUBLESHOOTING
Coil freezes 1 Capillary tube or strainer restricted. 1 Replace restricted capillary tube.
2 Fan blade or blower wheel stuck. 2 Check for obstruction and clear. Realign blower within housing
and tighten set screw onto fan motor shaft.
3 Compressor contactor stuck closed. 3 Replace contactor.
4 Return air sensor defective. 4 Replace sensor.
5 Low refrigerant charge. 5 Locate refrigerant leak, recover refrigerant, repair leak, install
filter/dryer, evacuate system and weigh in proper charge.
6 Evaporator dirty, clogged or restricted. 6 Clean evaporator coil.
7 Dirty air filter (air flow restricted). 7 Clean filter.
8 Defective fan motor. 8 Replace fan motor.
CONDENSER TROUBLESHOOTING
Water outlet temperature
exceeds 110°F.
1 Condenser dirty, clogged or restricted. 1 Replace condenser coil.
2 Air or non-condensable gases in system. 2 Recover refrigerant, install filter/dryer, evacuate system and
weigh in proper charge of virgin refrigerant.
3 Refrigerant overcharged 3 Recover entire refrigerant charge and weigh in proper charge.
4 High head-pressure 4 Adjust water regulating valve.