44
Alarms
Display
Procedures
Press <Prg> button , then then press down button to
Alarm History, press <Enter> to confirm.
P r e s s < u p > o r
<down> to view
other alarms
If no alarm is
generated, the word
“No alarm!” will be
displayed.
Viewing Alarm history
No alarm!
Alarm history
No 014 16:58 18/12/13
AL02
High pressure
Acknowledging and Resetting Manual
Reset Alarms
Any alarm detected by the system, either an auto reset
alarm or a manual reset alarm will be displayed on the
LCD. However, only manual reset alarms require user’s
acknowledgement and reset.
To clear the alarm press <
> to acknowledge the
alarm.
If the alarm status is cleared, the corresponding device
icon and alarm icon
that are flashing will accordingly
disappear.
Low outlet water temperature protection (Code: AL03)
At any mode, if ST≤AR01, the compressor is off ,after
5 seconds delay, the fan motor will be stopped, PWM
water pump will run as EV05, other parts will keep
its original state. A continuous blink warning code
AL03 will appear on the LCD, it will record the instant
inlet water temperature RT1 and will return to normal
working after inlet water temperature RT≥RT1+ ST03.
High outlet water temperature protection (Code: AL05)
If ST≥AR03, the compressor is off ,after 5 seconds
delay, the fan motor will be stopped, PWM water pump
will run as EV05,other parts will keep its original state.
A continuous blink code AL05 will appear on the LCD,
it records instant inlet water temperature RT2 and will
return to normal working after inlet water temperature
RT≤RT2-ST04.
Water flow switch protection (Code: AL17)
At starting process, if water flow switch does not close
after AR04 time (DI1=OFF) after starting the water
pump, a continuous blink warning code AL17 will
appear on the LCD. If DI1=ON and last 5 seconds, it
will return back to work.
During unit working, if DI1=OFF and lasts 5s, the
compressor is off ,after 5 seconds delay, the fan motor
will be stopped, PWM water pump will run as EV06,
other parts will keep its original state, a continuous
blink warning code AL17 will appear on the LCD.
After AL17 alarm happen, if DI1=ON and lasts 5s, unit
will return to normal working.
Low evaporate temperature protection (Code: AL20)
The protection function will be valid at COOLING mode .
20 seconds after compressor working, if suction
temperature≤AR08, the compressors is off , 5 seconds
later, fan motor will be stopped, PWM pump runs as
EV06, other parts will keep its original state, a continuous
blink warning code AL20 will appear on the LCD.
High exhausted gas temperature protection
(
code
:
AL21
)
Discharge gas temperature
＞
AR10 and lasts 5
seconds
,
the compressors is off , 5 seconds later, fan
motor will be stopped, PWM pump runs as EV06 , other
parts keep original state. LCD display AL21 and flash.
Low pressure protection (Code: AL35)
After starting the compressor, it will check the
low pressure after AR09 delay. If LPS≤AR13, the
compressor is off, 5 seconds later, fan motor will
be stopped, PWM water pump will run as EV06,
