Notices For Use - Friedrich MWM09Y1J Installation And Operation Manual

Notices for use

Working principle and special functions for cooling
Principle:
Air conditioner absorbs heat in the room and transmit to outdoor and discharged, so that
indoor ambient temperature decreased, its cooling capacity will increase or decrease by
outdoor ambient temperature.
Anti-freezing function:
If the unit is running in COOL mode and in low temperature, there will be frost formed on
the heat exchanger, when indoor heat exchanger temperature decreased below 0
indoor unit microcomputer will stop compressor running and protect the unit.
Working principle and special functions for heating
Principle:
Air conditioner absorbs heat from outdoor and transmits to indoor, in this way to increase
*
room temperature. This is the heat pump heating principle, its heating capacity will be
reduced due to outdoor temperature decrease.
If outdoor temperature becomes very low, please operate with other heating equipments.
*
Defrosting:
When outdoor temperature is low but high humidity, after a long while running, frost will
*
form on outdoor unit, that will effect the heating effect, at this time, the auto defrosting
function will act, the heat running will stop for 8-10mins.
During the auto defrosting, the fan motors of indoor unit and outdoor unit will stop.
*
During the defrosting, the indoor indicator flashes, the outdoor unit may emit vapor.
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This is due to the defrosting, it isn't malfunction.
* After defrosting finished,the heating will recover automatically.
Anti-cool wind function:
In "Heat" mode, under the following three kinds of state, if indoor heat exchanger doesn't
arrive at certain temp., indoor fan will not act, in order to prevent cool wind blowing(within
2 mins):
1. Heating starts. 2.After Auto Defrost finished. 3.Heating under the low temperature.
Gentle Breeze
In the following situation, the indoor unit may blow gentle breeze, and
the guide louver rotate to a certain position:
1. In "Heat" mode, the unit turned on, the compressor doesn't arrive the starting condition
2. In "Heat" mode, the temperature arrive at the setting value and the compressor stop
running about 1min.
1
, the
℃
.