Dimplex DAC12AC Spezifikationen PDF herunterladen (Seite 10)

Dimplex Thermal Solutions 1800-YOU-KOOL

Low refrigerant

pressure fault -

(Automatically

reset when

satisfied with

pressure)

 Low ambient air temperature.

 Loss of fluid flow through

evaporator.

 Loss of refrigerant.

 Refrigerant solenoid not

functional.

 Faulty pressure switch.

 Compressor crankcase not warm

or faulty crankcase heater.

 Ensure chiller is operating within its

designed ambient temperature specification.

 Check fluid flow and ensure evaporator is

clean.

 Have a refrigerant technician leak check unit

and charge with the appropriate refrigerant.

 Check wiring to solenoid or replace valve.

 Replace pressure switch.

 Ensure main power disconnect has been on

for at least 8 hours prior to use. Replace

crankcase heater if faulty.

High refrigerant

pressure fault -

(Manually reset

inside of chiller)

(Example of a

high pressure

switch shown)

AIR COOLED CHILLERS:

 Air filters dirty.

 Condenser dirty.

 Incoming air too hot.

 Inoperative fans.

 Back panel out of chiller.

 Phase rotation incorrect.

 Refrigerant system overcharged.

WATER COOLED CHILLERS:

 Low water flow to condenser.

 Condenser dirty.

 Regulating valve operating

incorrectly.

 Refrigerant system overcharged.

 Clean filters (See maintenance section).

 Clean condenser (See maintenance section).

 Ensure the chiller is properly ventilated with

fresh air not exceeding 90°F, unless

designed for high-ambient temperature

operation.

 Check for blown fan fuses.

 Ensure all covers and panels are in chiller.

 Correct phase rotation at incoming power.

 Have a refrigeration technician ensure the

system is properly charged.

 Check condenser water supply and pressure.

 Clean condenser.

 Have a refrigeration technician adjust the

valve to the proper pressure setting and

check operation.

 Have a refrigeration technician ensure the

system is properly charged.

Compressor

overload -

(May be manually

or automatically

reset, depending

on compressor)

 Compressor running too hot.

 Temperature setpoint too high.

 Refrigerant pressures too high or

low.

 Faulty overload module.

 Low voltage to chiller.

 Defective compressor.

 Allow compressor to cool, then restart unit.

 Move temperature setpoint to +/- 10°F of

factory setting.

 Have a refrigeration technician monitor

pressures and determine cause.

 If compressor will run, check amp draw on

compressor leads to verify compressor is ok.

 Correct incoming voltage.



Replace compressor.

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