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Deicing Control
Panasonic
Compressor Delay Control
2 seconds delay startup of compressor
2.6. Outdoor Unit
8
CU-MP28DBH5/CU-MP50DBH5
Time Delay Safety Control
If the compressor is stopped, it will not restart
within 3 minutes.
Outdoor Fan Motor Control
Controlled by outdoor PCB
4-way Valve Control
When the unit is turned off during heating
operation, 4-way valve stays at heating position
for 5 minutes.
Gas By-pass Valve Control
Inner control
Low Heating Load Control
During heating operation, if the temperature of the
indoor heat exchanger is higher than 60
, low
heating load control is activated.
When the temperature decreases to 52
, it will
stop.
To prevent frosting at outdoor heat exchanger during
heating operation.
Discharge Temp Protection Control
If the discharge temperature reaches 120
for
three times, the operation will stop but the
residual heat removal control is still available.
Expansion Valve Control
According to different heat load to adjust the
refrigerant flow rate automatically.
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