Panasonic Urban Multi MX1R Series Service Manual page 159

Operation Flowcharts
∗ 4 If the evaporator inlet temperature is -5°C or lower for a total of 10 minutes, or is -1°C or lower for a
∗ 5 Thermostat status
∗ 6 The drain-up kit is standard equipment for models CS-UM, CS-DM and CS-FM.
Intake air temperature
a = b = 1 (a = b = 0.5 possible for CS-LM, CS-UM, CS-TM, CS-DM only.)
138
Cooling operation
Auxiliary electric heater (52H): OFF
Swing flap?
YES
Swing flap
Program dry on/off?
OFF
Program dry display: Cancelled
Fan M1F operating at set
volume of air flow
Recycling guard timer
ON (5 minutes)
NO
∗4 Frost
prevention operation
in progress?
NO
YES
Test run in progress?
NO
∗5
Thermostat status?
ON
Electronic expansion valve Y1E:
Capacity control
Thermostat ON operation signal
to outdoor unit: Output
Option
∗6
Drain-up kit M1P : ON
A
total of 40 minutes, frost prevention operation is initiated. Normal operation resumes when the
temperature is +7°C or higher for 10 consecutive minutes.
NO
Moisture prevention
conditions?
NO
Set direction of air flow
ON
Program dry in operation
Option
YES
Drain-up kit M1P : OFF after 5
minutes residual operation
Option
YES
Drain-up kit Y1E : ON
Option
OFF
Drain-up kit M1P : OFF after 5
minutes residual operation
Preset temperature
Troubleshooting Urban Multi "MX1, ME1 Series" Using R-22
PACD011001C2
YES
Moisture prevention position
Cassette: P1
Suspended :P0
Electronic expansion valve
Y1E : OFF
Thermostat on operation signal to
outdoor unit: Cancelled
(VF022)