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Midea Alfa inverter 09HRDN1 Manual

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10.5.5 Current protection
Model Current Compressor
I>12 A Off
10.5A<I<12A
Decrease frequency of compressor
Current up MSH-12HRDN1
I< 10.5A On
I>11.5 A Off
8.5A<I<11.5A
Decrease frequency of compressor
Current down MSH-09HRDN1
I< 8.5A On
11.5.6 Rated capacity test
Set mode to cooling mode
Set temp. to 17°C
Set fan speed to high speed
Push turbo button 5 times in 10 seconds.
Using special remoter controller
After 5 hours, cancel rated capacity test
Turbo function
Increasing frequency of compressor
After operating 30 minutes, return automatically to the mode and temp. previously selected.
10.6. Dehumidifying mode
10.6.1. The 4-way valve is off
10.6.2. the indoor fan is fixed in breeze speed
10.6.3. Compressor run in low frequency
10.6.4. Low room temperature protection:
When room temperature decreases to below 10 , compressor and outdoor fan will stop(indoor fan
is Breeze). Dehumidifying operation will be resumed when room temperature restores to over 12 .
10.6.5. At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that of
cooling mode.
10.7. Heating mode
10.7.1. Generally, the 4-way valve is open at heating mode, but it is closed at defrosting. 4-way valve must
delay 2 minutes compared with compressor if the compressor changed into non-heating mode or
turned off. 4-way valve doesn't delay in dehumidifying mode.
10.7.2. Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except
for the defrosting mode or the end of defrost.
10.7.3. Action of compressor and outdoor fan motor at heating mode: compressor must run for 7 minutes
after starting and then judge temperature. Meanwhile other protections are still valid.
Condition Compressor Outdoor fan
T> Ts+3 Off Off Room temp. up
T<Ts+3 On On
T< Ts+2 On On Room temp. down
T>Ts+2 Off Off
10.7.4. Indoor Fan actions at heating mode
Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind
… 18 …


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