Dimplex DAC12AC Especificaciones descargar pdf (Pagina 9)

Dimplex Thermal Solutions 1800-YOU-KOOL

TROUBLESHOOTING GUIDE:

 This guide should serve as a general outline for troubleshooting issues with all Dimplex Thermal

Solutions chillers. Due to the various models of DTS chillers, the items listed in possible causes

may not apply to every DTS chiller. Contact the DTS customer service department for

assistance at 1-800-YOU-KOOL

 Refer to the Warranty Procedures section of this manual before having any work performed on

units that are under warranty.

PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION

Chiller will not

turn on. (No

display on

temperature

controller)

 No power to chiller.

 Main disconnect turned off.

 Blown fuses.

 Tripped starter overloads.

 Check power feed to chiller.

 Turn on main disconnect.

 Check for and replace blown fuses.

 Reset any tripped overloads.

Chiller turns on

but nothing

happens.

(Display is on but

no pump or

cooling cycle)

 Selector switch not turned on.

 Remote signal not active.

 Fault present within chiller.

 Fluid pump not operating.

 Blown fuses.

 Phase rotation incorrect.

 Turn selector switch to ON or LOCAL.

 Check remote connection for signal.

 Determine fault and clear if possible.

 Check pump overload and power to

contactor.

 Check and replace fuses.



Correct phase rotation at main disconnect.

Fluid pump is on

but does not

create required

pressure or flow.

(Flow fault)

 No fluid present at pump suction.

 Pump discharge closed or

blocked.

 Fluid is dirty / dirty filters.

 Fluid line size too small.

 Pump / fluid system is air-bound.

 Phase rotation incorrect.

 Check fluid level and ensure there is fluid at

the pump’s suction.

 Ensure all fluid lines are open to flow.

 Clean fluid and change filters.

 Up-size fluid lines outside of chiller.

 Vent pump cavity to flood the suction.



Correct phase rotation at main disconnect.

Fluid pump is

operational but

the refrigerant

compressor will

not run.

 Fluid temp is below setpoint.

 Inadequate fluid flow.

 Low refrigerant pressure.

 High refrigerant pressure.

 Compressor overload tripped.

 Compressor lube protector

tripped (If equipped).

 Blown fuses to compressor.

 Faulty temp controller output.

 Bad compressor.

 Allow fluid system to increase in

temperature.

 Correct fluid system to establish flow.

 SEE “Low refrigerant fault” section.

 SEE “High refrigerant fault” section.

 SEE “Compressor overload” section.

 Reset lube protector.

 Check and replace blown fuses.

 Consult DTS customer service department.



Consult DTS customer service department.

Chiller is running

but does not

maintain the

desired fluid

temp.

 Fault present within chiller.

 Phase rotation incorrect.

 Fluid or heat exchanger is dirty.

 Loss of flow or fluid level.

 Low refrigerant pressure.

 Ambient temperature too high.

 Heat load exceeds chiller’s

capacity.

 Determine fault and clear if possible.

 Correct phase rotation at incoming power.

 Replace fluid and clean fluid system.

 Check fluid system for free flow and ensure

chiller has adequate fluid level.

 Restart chiller or clear fault on controller.

SEE “low refrigerant fault” section.

 Ensure chiller is operating within its

designed ambient temperature specification.

 Reduce heat load to chiller if possible.

Check the factory specifications to ensure

the chiller is not being operated more than

+/- 10°F of the original temperature

setpoint or fluid flow.

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Dimplex DAC12AC Especificaciones Pagina 9

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