Справочник Пользователя для Carrier 30RH

30RA/30RH

GB - 14

Troubleshooting

A list of possible faults, as well as the probable cause and
suggested solutions is shown as follows. In the event of a unit
malfunction it is recommended to disconnect the power supply and
ascertain the cause.

Symptoms

Cause

REMEDY

Unit does not start:

- No power supply;

CONNECT

POWER

SUPPLY

- Main switch open;

SWITCH

- Low line voltage;

CHECK

VOLTAGE

AND

REMEDY

THE

DEFICIENCY

- A protection has tripped;

RESET

- Contactor stuck open;

CHECK

AND

NECESSARY

REPLACE

CONTACTOR

- Seized compressor;

CHECK

AND

NECESSARY

REPLACE

COMPRESSOR

- Loose electrical connections;

CHECK

CONNECTIONS

Unit runs continuously or starts and stops frequently:

- Defective compressor contactor;

CHECK

AND

NECESSARY

REPLACE

CONTACTOR

- Defective compressor;

CHECK

AND

NECESSARY

REPLACE

COMPRESSOR

- Refrigerant losses;

CHECK

AND

ADD

THE

NECESSARY

QUANTITY

- Total water flow too low

CHECK

FOR

PRESSURE

DROP

THE

HYDRAULIC

CIRCUIT

Static pressure in the hydraulic circuit too low;

CHECK

THE

PRESSURE

GAUGE

AND

RESTORE

NECESSARY

Unit continuously cuts out at low pressure:

- Refrigerant losses;

CHECK

AND

ADD

THE

NECESSARY

QUANTITY

- Low water flow in the exchanger;

CHECK

WATER

PUMP

- Unit start-up delay;

WAIT

UNTIL

THE

SYSTEM

HAS

STABILISED

Unit continuously cuts out at high pressure:

- Defective high pressurestat;

CHECK

AND

NECESSARY

REPLACE

PRESSURESTAT

- Blocked expansion valve;

CHECK

AND

REPLACE

NECESSARY

- Blocked filter drier;

CHECK

AND

NECESSARY

REPLACE

FILTER

- The outdoor fan/s does/do not work;

CHECK

THE

CONDITION

THE

FAN

MOTOR

AND

ITS

THEIR

ELECTRICAL

CONNECTIONS

Obstructed or dirty battery;

REMOVE

THE

OBSTRUCTION

CLEAN

THE

BATTERY

Abnormal system noise:

- Piping vibration;

SUPPORT

PIPING

- Noisy compressor;

CHECK

AND

CHANGE

NECESSARY

- Hissing expansion valve;

CHECK

AND

ADD

REFRIGERANT

NECESSARY

- Badly fitting panels;

INSTALL

CORRECTLY

Compressor loses oil:

- Leaking refrigeration circuit;

REPAIR

LEAK

Water loss:

- Defective entering or leaving connections;

CHECK

AND

TIGHTEN

NECESSARY

The unit does not defrost
(only for 30RH units):

- Four-way reversing valve faulty;

CHECK

AND

REPLACE

THE

VALVE

NECESSARY

- Defrost sensor broken;

CHECK

AND

REPLACE

THE

SENSOR

NECESSARY