Haier HSU-09H03/R(DB) Сервис мануал онлайн [25/131] 613257

Haier HSU-09H03/R(DB) Сервис мануал онлайн [25/131] 613257
Defrosting When data calculated by ChTAˉ¢falls into the range of -15ćİChTAˉ¢, time
Time Interval interval between two defrosting cycles is 45 minutes.
When data calculated by ChTAˉ¢falls into the range of ChTAˉ¢<-15ć, time
interval between two defrosting cycles is 65 minutes.
Defrosting When defrosting begins, compressor will stop for one minute, external fan is running and
Operation 50s later, four-way valve will be off.
When compressor starts, external fan will be off, compressor will run at 58HZ for 60s then
move on to target frequency of 88HZ.
During defrosting, compressor current and air discharge overheat protection features are
effective. During defrosting, if compressor shuts down due to activation of protection
feature or due to malfunction, it will resume after 3 minutes. In the unit is still within
defrosting cycle, it will resume defrosting and startup of compressor will be based on the
rule for defrosting startup. (The unit will exit defrosting mode and handle fault in the event
of 3 consecutive restart failures.)
On entering defrosting, it must guarantee that compressor will operate for a minimum of 2
minutes in defrosting mode before exit.
Defrosting When one of the following conditions is met, defrosting operation will be switched to
Exit Condition heating operation.
˄1˅:Temperature of outdoor heat exchanger exceeds 7ć for 80s continuously
˄2˅: Temperature of outdoor heat exchanger exceeds 12ć for 5s continuously
˄3˅:Defrosting operation continues for 9 minutes.
Defrosting Compressor stops and external fan starts, 50s later, four-way valve will be on, 60s later,
Exit compressor will operate as per startup process.
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As long as compressor is running, the compressor discharge overheat protection
feature will be activated, yet discharge sensor fault must be alarmed 4 minutes after
compressor starts.
Compressor
Discharge
TD˄ć˅
Temperature Abnormal Shutdown
Protection 117
rapid frequency drop˄1HZ/s˅
112
slow frequency drop (1HZ/10s)
108
invariable frequency
105
frequency rise (1HZ/10s)
98
frequency rise˄1HZ/1 s˅
When TD>117ć for 20s continuouslyˈair discharge overheat protection will be
activated and fault will be reported to indoor unit.
Indoor heat exchanger sensor will check temperature of indoor heat exchanger, if
the temperature is higher than 55ć,compressor rotate speed will be reduced to
activate indoor heat exchanger high temperature protection. When temperature of
indoor heat exchanger falls below 48ć, normal control will be resumed.
+6809,12H03/R(DB)  Functions and control
Demastic Air Conditioners
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