Owners Manual

33
OPERATIONS MANUAL
REACH-INS & ROLL-INS
TROUBLESHOOTING GUIDE
PROBLEM PROBABLE CAUSE CORRECTION
Start capacitor open,
shorted or blown.
1. Relay contact not opening properly.
2. Prolonged operation on start cycle:
(a) Low voltage to unit.
(b) Improper relay.
(c) Starting load too high.
3. Excessive short cycling.
4. Improper capacitor.
1. Clean contacts or replace relay.
2.
(a) Determine reason and correct.
(b) Replace with correct relay.
(c) Correct by using pump down.
3. See “Condensing Unit Short Cycles” above.
4. Determine correct size and replace.
Run capacitor open,
shorted or blown.
1. Improper capacitor.
2. Excessively high line voltage, over 110%
of rated maximum.
1. Check size and replace.
2. Determine reason and correct.
Relay defective or blown
out.
1. Incorrect Relay.
2. Incorrect mounting angle.
3. Voltage too low or too high.
4. Excessive short cycling.
5. Loose or vibrating mounting position.
6. Incorrect run capacitor.
7. Loose wiring on relay or overload.
1. Check relay and replace.
2. Remount relay in correct position.
3. Determine reason and correct.
4. See “Condensing Unit Short Cycles” above.
5. Remount rigidly.
6. Replace with proper capacitor.
7. Tighten all wiring screws.
Product zone
temperature too high.
1. Control setting too high.
2. Inadequate air circulation.
3. Dirty condenser.
1. Adjust T-stat.
2. Rearrange product load to improve air
circulation.
3. Clean condenser coil.
Suction line frosted or
sweating.
1. Overcharge of refrigerant.
2. Evaporator fan not running.
3. Expansion valve stuck open.
4. Expansion valve superheat too low.
1. Evacuate and re-charge.
2. Determine reason and correct.
3. Clean valve, evacuate and re-charge.
4. Adjust superheat to required setting.
Liquid line frosted, cold
or sweating.
1. Restriction in drier strainer.
2. Liquid line service valve partially closed.
1. Replace drier, evacuate and re-charge.
2. Open valve fully or replace if necessary.
Noisy condensing unit. 1. Loose parts or mounting.
2. Tubing rattle or vibration.
3. Bent fan blade causing excessive vibration.
4. Fan bearings worn.
1. Tighten all mounting parts and shroud cover.
2. Reform tubing to be free of contact.
3. Replace fan blade.
4. Replace fan motor.
Thermometer reads
different than actual
temperature.
1. Calibration.
2. Defective.
1. Consult Operations Manual and calibrate.
2. Replace.
Water leak inside unit. 1. Condensate drain pan not installed properly.
2. Unit not level.
3. Drain pan misaligned.
4. Defective drain pan.
1. Consult Operations Manual for install
instructions.
2. Make sure unit is level or pitched back slightly.
3. Make sure drain pan is aligned properly.
4. Replace.
Doors misaligned. 1. Shifted during shipping. 1. Refer to Operation Manual for hinge
adjustment.