Failure Diagnosis; End Of The Machine Life - Lennox eCOMFORT R32 GAC 035S Installation, Operating And Maintenance Manual

4.- MAINTENANCE

4.6.- FAILURE DIAGNOSIS

PROBLEM
The unit does not start after the last start.
The fan does not work (although the
compressor is operating).
The compressor stops when the high
pressure switch is cut off.
The compressor stops when the low
pressure switch is cut off.
The oil level in the compressor is very low.
High noise level of compressor and high
and low pressures are abnormal.

5.- END OF THE MACHINE LIFE

At the end of the useful life of the units, please take into account the correct segregation of the waste generated. No Hazardous like:
Painted metallic parts, plastic elements, copper pipes, batteries, exchangers, liquid receivers, water pumps, fans.. And Hazardous
Materials such as batteries, electrical and electronic elements, compressors, dehydrating filters, valves or refrigerant gas, etc. to be
managed with an authorized dealer.
Installation manual / eCOMFORT R32-MIL166E-0222 - 09/2022
CAUSE
•
Disconnected supply.
•
Main switch set to STOP.
•
No water flow.
•
Fuses are broken.
•
Low electrical supply.
•
One of the safety devices has been
activated.
•
Compressor fault.
•
Low water temperature.
•
Internal safety device open.
•
Bad connection.
•
Poor condensation control.
•
Condenser coil blocked.
•
Unit operating outside of limiting.
•
Abnormal operation of the fans.
* Insufficient charge.
* The water exchanger is blocked (water
side).
* No water flow.
* Expansion valve blocked
•
The crank case heater is not working.
•
Phase connection for compressor power
supply incorrectly.
ACTION
•
Check electrical supply.
•
Connect main switch.
•
Start water pump (and check air in
system).
•
Check voltage.
•
Check antifreeze thermostat.
•
Check high/low pressure switch.
•
Change compressor.
•
Create demand for cooling.
•
Let the motor cool.
•
Connect properly.
•
Check operation.
•
Maintain condenser coil.
•
Check the ventilators.
* Check the charge.
* Maintain the exchanger.
* Check that there is sufficient water flow.
* Change expansion valve.
•
Replace the crank case heater and
check oil level.
•
Switch the wires between two of the
phases of compressor power supply.
• 83 •