Mitsubishi Electric MSXY-FN07VE-R1 Service Manual page 20

9-8. EMERGENCY/TEST OPERATION
In the case of test run operation or emergency operation, use
EMERGENCY OPERATION switch on the right side of the indoor unit.
Emergency operation is available when the remote controller is miss-
ing or has failed, or when the batteries in the remote controller are
running down. The unit will start and OPERATION INDICATOR lamp
will light up.
The first 30 minutes of operation is the test run operation. This opera-
tion is for servicing. The indoor fan runs at High speed and the tem-
perature control does not work.
After 30 minutes of test run operation, the system shifts to
EMERGENCY COOL MODE with a set temperature of 24°C. The fan
speed shifts to Medium.
The coil frost prevention works even in the test run or the emergency
operation.
In the test run or the emergency operation, the horizontal vane oper-
ates in VANE AUTO ( ) mode.
Emergency operation continues until EMERGENCY OPERATION
switch is pressed once the unit receives any signal from the remote
controller. In the latter case, normal operation will start.
NOTE: Do not press EMERGENCY OPERATION switch during normal operation.
9-9. 3-MINUTE TIME DELAY OPERATION
When the system turns OFF, compressor will not restart for 3 minutes as 3-minute time delay function operates to protect
compressor from overload.
OBH779C
Emergency
operation switch
(E.O. SW)
Operation mode
Set temperature
Fan speed
Horizontal vane
The operation mode is indicated by the
Operation Indicator lamp as following
Operation Indicator lamp
EMERGENCY COOL
STOP
20
COOL
24°C
Medium
Auto
Lit
↓
Not lit