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50%, at the same time by-pass valve is connected, some times later the compressor energy up to 75%, some
times later the compressor energy up to 100%. When quit defrost, the compressor download to 50% firstly,
4-way valve reverse and close the by-pass valve, run in heating mode.
b. When the fin temp. enter the defrost temp. setted value, judge if the defrost interval is met, enter defrost if it
meets the interval, quit defrost compulsively if the chiller do not reach the defrost quit temp. when at the max.
defrost time, the defrost action is the same with pressure defrost.
Quit defrost if one of the below conditions is met:
1. Meet the max. defrost time;
2. Both the discharging pressure and fin temp. meet the defrost quit condition.
Note: start to time the defrost time interval only when defrost once, the first defrost after compressor
startup is not limited by the defrost interval.
3. Upload condition
Upload procedure: 1# chiller25％→1# chiller 50％→1# chiller 75％→1# chiller 100％→1# chiller 75％
→2# chiller 25％→2# chiller 50％→2# chiller 75％→1# chiller 100％→2# chiller 100％→1# chiller 75％→2#
chiller 75％→3# chiller 25％→3# chiller 50％→3# chiller 75％→1# chiller 100％→2# chiller 100％→3# chiller
100％→1# chiller 75％→2# chiller 75％→3# chiller 75％→4# chiller 25％→4# chiller 50％→4# chiller 75％→1#
chiller 100％→2# chiller 100％→3# chiller 100％→4# chiller 100％
4. Download condition
Download procedure: 1# chiller 100％→1# chiller 75％→2# chiller 75％→3# chiller 75％→4# chiller 75
％→1# chiller 50％→2# chiller 50％→3# chiller 50％→4# chiller 50％→1# chiller 25％→2# chiller 25％→3#
chiller 25%→4# chiller 25％→1# chiller stop→2# chiller stop→3# chiller stop→4# chiller stop
Before the later chiller startup, the former chillers which have started will download to 75% and then start
the later chiller.
Note: 1#, 2#, 3# and 4# are just startup serial number and not concrete number for chiller, which chiller
startup first is decided by its own operation time, start the chiller which the accumulative time is shortest firstly.
When press button to stop chiller, stop the chiller according to the chiller number sequence.
Timer: select timer control except in individual control condition, enter time segment setting after selecting
time segment, the min. interval between startup and stop is 10 minutes in one time segment, and the min.
interval between time segment is 10 minutes. The touch screen will show operation display when start the timer
control, this display can only stop chiller once manually, if can not enter the regulation display after operating
once, only the timer can be used.
Long-distance control: select long-distance control except in individual control condition, chiller startup
when switch on the long-distance input port, or will stop will cut off the port. The touch screen will show
operation display when start the long-distance control, this display can only stop chiller once manually, if can
not enter the regulation display after operating once, only the long-distance can be used.
Note: Cut off the power of controller once after changing the control type, every time the controller power
off should last for 5 seconds.
Other failures:
Failure
Water outlet temp.
sensor failure
: 1. Cycling water outlet temp. meets the condition;
2. Meet the min. time of chiller stops;
3. Upload according to upload/download interval.
: 1. Cycling water outlet temp. meets the condition;
2. Meet the min. time of chiller stops;
3. Download according to upload/download interval.
Action
Last for 5 seconds, chiller downloads
and stops, the water pump will not stop
Management
Press "reset" after troubleshooting,
stop water pump later, press "ON"
to restart.
40
HAIER CHILLER
Remark
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