Midea MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1, MSH-12CRN1, MSH-12HRN1 Manual page 47

Midea air conditioner service manual
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8.9
Defrosting operation (Available for heating only).
8.9.1
Defrosting condition:
When T3<0
T3: Temp. of condenser.
8.9.2
Ending condition of defrost
If one of following conditions is satisfied, end the defrost and turn into heating:
A.The defrost time has reached to 10 minutes.
B.T3>20.
8.9.3
Time sequence of the whole defrosting procedure is as follows
Compressor
4-way Valve
Outdoor Fan
8.10
Automatic operation mode
8.10.1 The air conditioner automatically selects one of the following operation modes: cooling,
heating or ventilation according to the difference between room temp. (TA) and set
temp. (TS).
TA—TS
TA—TS>2
-1 ≤TA —TS≤+2
TA—TS<-1
8.10.2 The indoor fan blows automatically in corresponding selected mode.
8.10.3 The motion of indoor fan's blade should accord with the selected operation mode.
8.10.4 One mode should be carried out for at least 15 minutes once selected. If the
compressor cannot start for 15 minutes, reselect the operation mode according to the
room temp. and set temp., or reselect when the set temp. varies.
8.11
Forced cooling function
8.11.1 Select forced cooling function with the forced cooling button or the switch.
8.11.2 The compressor is unconditionally turned on, after 30 minutes cooling operation whose
fan mode is set as low, the A/C operates under the DRY mode with a set temp. of 24 .
8.11.3 All protections of remote control cooling are available under forced cooling operation.
8.12
Forced Auto function
Select forced auto function with the forced auto button or the switch.
In forced auto status the A/C operates under remote control mode with a set temp. of
24 .
and compressor runs 40 minutes.
ON
ON
ON
Operation mode
Cooling
Fan-only
Heating (Fan-only for cooling only type)
OFF
OFF
241

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