35
PMGB0126A rev.2 - 11/2006
English
TROUBLESHOOTING
Problem Causes Solution
No Restarting of
Outdoor Fan Motor
and Compressor
after Stoppage
for Cooling
Operation (Lamp
of “RUN” Switch
and Indicator is
Flickered)
Tripped High Pressure
Switch
•
Obstacle to Air Intake of Air Discharge
for Outdoor Unit
•
Remove the obstacle•
Insufficient Air Intake or Air Discharge
Space for Outdoor Unit
•
Keep the minimum Air Intake and Air Discharge Space
•
Short Circuited Air Discharge for
Outdoor Unit
•
Remove Any Obstacle
•
Faulty Outdoor Fan Motor• Replace the Outdoor Fan Motor•
Overcharged Refrigerant• Charge Correct Refrigerant Gas•
Clogged Capillary Tube• Replace the Capillary Tube•
Excessively High Ambient
Temperature
•
See Unit Working Range
•
Temperature of High Air Inlet
Temperature for Indoor Unit
•
•
Reduce the Cooling Load•
Tripped Overcurrent
relay for Compressor
Motor
•
Excessively High Discharge or Suction
Pressure
•
Same as Tripped High Pressure Switch Remedy Action
•
High or Low Voltage
• Obtain Correct Voltage•
Faulty Compressor Motor (After
Checked Electrical Resistance)
•
Replace the Compressor•
Faulty Overcurrent Relay• Replace the Overcurrent Relay•
Faulty Starting Relay• Replace the Starting Relay•
Frequent start/stop compressor• Replace the compressor•
Insufficient Cooling
(Lamp of “RUN”
Switch activates)
Excessive Cooling Load• Reduce the Cooling Load•
Too Low Pressure
•
Insufficiently Charged Refrigerant Gas
• Charge Correct Refrigerant Gas•
Refrigerant Gas Leakage• Repair Leakage and Charge Correct Refrigerant Gas•
Clogged Strainer• Repair or Replace the Strainer•
Clogged Suction Piping• Remove the Obstacle•
Clogged Air Filter• Cleaning the Air Filter•
Obstacle to Air Intake or Air Discharge
for Indoor Unit
•
Take Away the Obstacle
•
Faulty Indoor Fan Motor• Replace the Indoor Fan Motor•
Short Circuited Air Discharge for
Indoor Unit
•
Take Away any Obstacle
•
Excessively High
Pressure
• Same as Tripped Air Discharge for
Indoor Unit
•
Same as Tripped High Pressure Switch Remedy Action
•
Insufficient Heating
(Lamp of “RUN”
Switch Activates)
(Only for Heat-
Pump Models)
Too Low Pressure
•
Clogged Strainer• Repair or Replace the Strainer•
Clogged Suction Piping• Remove the Obstacle•
Obstacle to Air Intake or Air Discharge
for Outdoor Unit
•
Take away the obstacle
•
Faulty Outdoor Fan Motor• Replace the Outdoor Fan Motor•
Short Circuited Air Discharge for
Outdoor Unit
•
Take Away any Obstacle
•
Faulty Thermistor(s) for Deicer
• Replace the Thermistor(s)•
Excessively High
Pressure
• Same as Tripped Air Discharge for
Indoor Unit
•
Same as Tripped High Pressure Switch Remedy Action
•
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