mrclab PGI-850H, User Manual

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T h e c o o l i n g s y s t e m t ro u b l e s h o o t i n g
Condition Cause Solution
User can not lower
temperature (Only
happen to the
machine with
cooler)
a. Heat Sink is covered by the dust,
cooling system is not well-running
b. The compressor does not work
c. Spread-Heat-Motor can not work.
d. Compressor
run idle, cold media running
a. remove dust, clean &
maintenance
b. Power on failure because of
Power-On-Voltage shortage;
please do not use until it is
improved.
c. Replace Spread-Heat-Motor
d. Ask for repair &
(electric AL1) d. over humidity setting, lock (electric type)
e. no water, float water lever insufficient
f. water bath not deep
d. reset
e. fill water
f. clean & maintenance
Humidity going up
out of control
a. humidity control, output signal break
b. humidity loop out of control
c. P
、
I
、
D value inaccurate or compressor stop
d. TRIAC or RY damage
e. SENSOR damage
a. ask for repair & maintenance
b. ask for repair & maintenance c.
re-auto. tuning, check if
compressor stop, if yes, repair
d. ask for repair & maintenance
e. ask for repair & maintenance
Humidity deviation
large or unable reach
a. humidity unstable yet
b. P
、
I
、
D value not set(electric type)
or value inaccurate
c. compressor start abnormally
d. setting value and mechanical function does not
comply
e. circulation fan or motor do not work
f. SENSOR damage
g. internal wind circulation jam
h. refrigerated system frost cause bad circulation
a. observation
b. re-auto. tuning AT or adjust
c. ask for repair & maintenance
d. check machine function, reset
e. ask for repair & maintenance
f. ask for repair & maintenance
g. improve install place
h. defrost
Humidity display
abnormal
a. humidity controller damage
b. SENSOR damage
c. Humidity transformer signal poor
d.
Temp. SENSOR not maintenance or aging
a. ask for repair & maintenance
b. ask for repair & maintenance
c. ask for repair & maintenance
d. maintenance or replace