Dometic PGD1 User Manual

43
EN
VARC Chiller Controls Troubleshooting
Alarm Reset Delay
Alarm
Relay
System Action Corrective Actions
High Discharge
Pressure
Aer 3 retries
every 30 mins,
must be reset
manually
Immediate Yes Turns off VARC • Check for the proper
refrigerant pressure with the
gauge. If normal, check for a
defective pressure switch.
• Check that there is proper sea
water and loop water flow.
• Check that water strainers are
not clogged.
• Check that the system is not
overcharged.
Inverter Model Not
Compatible
Aer 15 retries
every 60 mins,
must be reset
manually
Make sure Power+ is being used.
Low Pressure
Differential
Manual 90 sec Yes Turns off VARC • Check the EEV motor.
• Use a gauge to check for
proper the refrigerant
pressure.
• Check suction the
temperature to verify that the
reversing valve is in proper
position.
Low Suction Pressure Aer 3 retries
every 30 mins,
must be reset
Manually
60 sec Yes Turns off VARC • Use a gauge to check for the
proper refrigerant pressure. If
normal, check for a defective
pressure switch.
• Check for the proper sea
water and loop water flow ‘
• Check that the water strainers
are not clogged.
• Check that the system is not
undercharged.
Power+ Device Offline Automatic 30 sec Yes Turns off compressor
Power+ in Retry Warning signal Check the power supply.
Sea Water Inlet Low Manual 10 sec Yes Warning signal Low temperature due to
geographical climate.
Sea Water Inlet Sensor
Failure
Manual Immediate Yes Warning signal • Check the sensor for shorts
and opens
• Compare the temperature
reading with the digital
thermometer.

Dometic PGD1 Specifications

General

Brand	Dometic
Model	PGD1
Category	Control Unit
Language	English