TROUBLE SHOOTING
IMPORTANT: Only qualified personnel should service TUACA unit and
components.
WARNING: To avoid personal injury and or property damage, always disconnect electrical power,
before starting any repairs. If repairs are to be made to the TUACA unit, drain TUACA unit before
proceeding.
COOLING UNIT
Trouble
Probable
Cause
Remedy
Cooling or
condensing unit
non-
operational
1.
2.
3.
4.
5.
6.
7.
No electrical power.
Improper voltage/amperage
Loss of refrigerant.
Bad overload and relay.
Compressor bad.
Restriction (pinched or crimped
line).
Condenser Dirty
1.
2.
3.
4.
5.
6.
7.
Plug power cord into electrical
box.
Check for proper
voltage/amperage.
Repair leak and replenish
refrigerant.
Replace overload and relay
Replace compressor.
Repair, straighten or replace
defective line.
Clean condenser unit w/vacuum
cleaner.
Condenser fan
motor not
operating
1.
2.
3.
Electrical cord loose or
disconnected from condenser fan
motor or compressor terminals.
Fan blade obstructed.
Inoperative condenser fan motor.
1.
2.
3.
Tighten connections or replace
cord.
Remove obstruction.
Replace condenser fan motor.
Compressor
does not
operate
1.
2.
3.
4.
5.
6.
No power source.
Electrical power to cooling unit
turned off.
Low voltage.
Loose, disconnected, or broken
wire.
Inoperative overload protector or
start relay.
Inoperative compressor.
1.
2.
3.
4.
5.
6.
Plug power cord to electrical box.
Check line voltage.
Voltage must be at least 110 V at
compressor terminals at start.
Tighten connection or replace
broken wiring.
Replace defective part.
Replace compressor.
Note: During overload protector shut off condenser fan motor will continue to work. Otherwise,
troubleshooting condenser fan motor problems is the same as “Compressor does not operate”,
paragraph in addition to the following.
Condenser fan
motor not
operating
1.
2.
3.
Electrical cord loose or
disconnected from condenser fan
motor or compressor terminals.
Fan blade obstructed.
Inoperative condenser fan motor.
1.
2.
3.
Tighten connections or replace
cord.
Remove obstruction.
Replace condenser fan motor.
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