Operation Flowcharts PACD011001C2
328 Troubleshooting Urban Multi “MX1R, ME1R Series” Using R-407C
Heating operation
Drain kit (M1P): OFF
Swing flap
Defrost/Hot start display: OFF
Air flow direction setting
Swing flap?
Defrost operation
in progress?
Hot start in progress?
Recycling guard timer
ON (5 minutes)?
Test run in progress?
Thermostat status?
Defrost/Hot start display: ON
Auxiliary electric heater
(52H): OFF
Humidifier (Hu): OFF
Fan M1F : LL operation
Auxiliary electric heater
(52H): OFF
Humidifier (Hu): ON
Auxiliary electric heater
(52H): ON
Humidifier (Hu): ON
Fan M1F : Operating
at set air flow volume
Fan M1F : L operation
Fan M1F : OFF
Electronic expansion
valve Y1E :
capacity contorol
Electronic expansion valve
Y1E : closed
Electronic expansion
valve Y1E :open
Auxiliary electric heater
(52H): OFF
Humidifier (Hu): OFF
NO
NO
NO
YES
YES
NO
YES
YES
YES
∗13
∗12
∗14
∗15
∗12
NO
Low discharge air
temperature protection
YES
NO
OptionOptionOptionOption
A
(M058)
∗
12 Air flow direction
Air discharge is 100% horizontal when heating operation is turned off by thermostat.
∗
13 Hot start
Hot start is carried out when operation starts or defrosting is complete, and condenser inlet
temperature exceeds 34°C, or 3 minutes elapses, or when Tc > 52°C.
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