Hokkaido HKEN-HCNN 642XR, Руководство по обслуживанию

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When one of the following conditions is met, defrosting operation will be switched to
heating operation.
（
1
）
:Temperature of outdoor heat exchanger exceeds 7 for 80s continuously
℃
（
2
）
:Temperature of outdoor heat exchanger exceeds 12 for 5s continuously
℃
（
3
）
:Defrosting operation continues for 9 minutes.
E. When defrosting exit conditions are met, the unit will operate as follows
Compressor stops and external fan starts, 50s later, four-way valve will be on, 60s
later, compressor will operate as per startup process.
1.6:PTC Output Control
z When outdoor unit is energized, PTC output value is 0, 10s later, output value is 1.
z When compressor stops for 10 minutes continuously, PTC output value is 0.
z On receiving compressor startup instruction, initial PTC output is 1, and compressor
startup will be performed 5s later.
Two. System Protection Function
2.1:Time interval between compressor shutdown and restart is set at 3 minutes to ensure that
compressor will only restart after 3-minute shutdown and initial energization valves are turned on
to adequate opening position after being fully turned off.
2.2:TD High Temperature Protection
As long as unit is on, the TD air discharge overheat protection feature will be activated, yet
air discharge sensor fault must be alarmed 4 minutes after compressor starts.
TD （ ℃ ）
Abnormal Shutdown
117
rapid frequency drop
（
1HZ/s
）
1 09
slow frequency drop (1HZ/10s)
9 8
invariable frequency
93
frequency rise (1HZ/10s)
9
0
frequency rise
（
1HZ/1s
）
When TD > 117 for 20s continuously
℃ ，
air discharge overheat protection will be activated and
fault will be reported to indoor unit.
In other protection features, there is no continuous allowance.
2.3: Indoor unit TC high temperature prevention and control in heating mode:
Indoor heat exchanger sensor will check temperature of indoor heat exchanger, if the
temperature is higher than 55 , ℃ compressor rotate speed will be reduced to activate indoor heat
exchanger high temperature protection. When temperature of indoor heat exchanger falls below
48 , normal control will be resumed.
℃
TC
65
P Slow Drop
55
Q Maintain
52
48
R Slow Rise
P: Drop at the speed of 1Hz/10s
Classic Line Air Conditioner
Model: HKEN-HCNN 642 XR