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Troubleshooting – Denso PRO 18 User Manual

Page 24

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TROUBLESHOOTING

Self-Diagnostic Codes

Self-Diagnostic Codes will be displayed on the Control Board under the
following conditions:

Code

Condition

dF

When the evaporator thermistor
disengages the compressor.

FL

When the drain tank switch
shuts off the unit (FULL TANK
LED flashes).

AS

When unit disengages the
compressor while the conden-
sate pump is discharging water.

HP

When the high pressure switch
disengages the compressor.

LO

Lowest temperature set point.

HI

Highest temperature set point.

TANK

FULL

SET POINT

F

C

ROOM TEMP

AM

PM

SET TEMP

CLOCK/TIMER

FAN ON/OFF

COOL ON/OFF

PROGRAM

SET

START TIME

END TIME

SET CLOCK

RUN

HRS

MIN

Check the following points before calling a qualified technician.

SYMPTOM

POSSIBLE CAUSE

REMEDY

Unit does not operate

Ground fault breaker tripped

Reset breaker

Drain tank is full

Empty the drain tank

(FULL TANK LED will be
flashing)

Insufficient cooling

Dirty/blocked air filters

Clean air filters

Air inlet/outlet blocked

Clear air inlet/outlet

Improper temperature setting

Set to desired position

If symptoms persist after the above actions have been taken, turn the
unit off, disconnect the power cord plug and contact your MovinCool
reseller.

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