20
TROUBLESHOOTING
Insufficient Cooling
--------------------- See ”High Discharge Pressure” or
”Low Suction Pressure”
--------------------- Repair the Clogging and
Replace the Switch if Required
--------------------- Repair or Replace if required
--------------------- Obtain Correct Voltage
--------------------- Check the Power Line to the
Compressor: Repair when Required
--------------------- See ”High Discharge Pressure”
and ”High Suction Pressure”
--------------------- Tighten the Connections
--------------------- See ”High Suction Pressure”
--------------------- See ”High Discharge Pressure” or
”Low Suction Pressure”
High Discharge Pressure
----------------------- Clean the Condenser
----------------------- Check the Voltage and Obtain Correct Voltage
----------------------- Repair or Replace the Motor
----------------------- Secure Space for the Required Air Flow
----------------------- Charge the Correct Refrigerant Quantity
----------------------- Purge the Gas
----------------------- Remove the Restriction
----------------------- See ”High Suction Pressure”
Low Discharge Pressure
----------------------- Add Refrigerant
----------------------- See ”Unit Working Range”
Operating
High Discharge Pressure or
Low Suction Pressure
Clogged Capillary of Pressure Switch
High or Low
Pressure Switch
Tripped
Overcurrent Relay
for Compressor
Compressor
Cycling
Insufficient Cooling
High Discharge Pressure and
High Suction Pressure
Loose Connections
High Suction Pressure
High Discharge Pressure or
Low Suction Pressure
Tripped
High Voltage or Low Voltage
Single Phase or Phase Imbalance
Cycling ON
Faulty Switch
Condenser
Air Flow
High Discharge Pressure
Restricted
Clogged Condenser Coil
Low Fan Speed
Faulty Fan Motor
Circulating Air Flow
Overcharged Refrigerant
Non-Condensable Gas
Restricted Liquid Line
High Suction Pressure
Condenser Air
Inlet Temperature
High
Condenser
Air Flow
Low Discharge Pressure
Low Refrigerant Charge
Low Ambient Temperature
Summary of Contents for RUA-NP10ATS
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