PACD011001C2 Operation Flowcharts
Troubleshooting UM Combination “MA1R Series” Using R-407C 485
Program dry operation
Program dry display
Thermostat status?
Fan M1F : 6 minutes stopped
then L operation
Electronic expansion valve Y1E
closed
Drain-up kit M1P : Off after 5
minutes residual operation
Fan M1F : operation: L
Electronic expansion valve Y1E
degree of super heat control
A
(Option)
∗7
∗8
(VF023)
ON
OFF
∗
7 Programme dry display
Does not display preset temperature and air flow settings of the controller.
∗
8 Thermostat status
Preset temperature during programme dry operation.
Fan in operation
Swing flap Air flow direction setting
Swing flap?
Fan MF: Operating at set air flow
rate
Electronic expansion valve Y1E
closed
Drain-up kit (M1P): OFF
Auxiliary electric heater (K1R): OFF
Humidifier (Hu): OFF
A
∗10
∗11
∗9
No
YES
Option
(VF024)
∗
9 Fan operation
When fan operation has been selected using the remote controller, operation is turned OFF by
thermostat when temperature control operation has been selected.
∗
10 Air flow direction setting
If fan operation is selected with the remote controller, air discharge is 100% horizontal during
heating.
∗
11 Fan
If fan operation is selected with the remote controller, LL speed operation is carried out during
heating.
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