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8-10. EMERGENCY/TEST OPERATION
In the case of test run operation or emergency operation, use the emergency operation switch on the right side of the
indoor unit. Emergency operation is available when the remote con-
troller is missing, has failed, or when the batteries in the remote
controller 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
operation is for servicing. The indoor fan runs at High speed and
the temperature control does not work.
After 30 minutes of test run operation, the system shifts to
EMERGENCY COOL/HEAT
(MSZ)
MODE with a set temperature of
75°F (24°C). The fan speed shifts to Med.
All protective operations such as the coil frost prevention works
even in the test run or emergency operation.
In the test run or emergency operation, the horizontal vane oper-
ates in VANE AUTO ( ) mode.
Emergency operation continues until the emergency operation
switch is pressed once or twice or the unit receives any signal from
the remote controller. In the latter case normal operation will start.
NOTE:
Do not press the emergency operation switch during normal
operation.
8-11. 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.
8-12. Changing temperature indication (°F/°C)
• The preset unit is °F.
•
°F → °C: Press RESET button while the temperature buttons are pressed.
•
°C → °F: Press RESET button or remove the batteries
.
TIMER is cancelled and the display of set time disappears.
Press RESET button gently using
a fine-tipped object.
Operation mode
COOL
HEAT (
MSZ
)
Set temperature
75°F(24°C)
75°F(24°C)
Fan speed
Med.
Med.
Horizontal vane
Auto
Auto
The operation mode is indicated by the Operation
Indicator lamp as follows.
Lit
Not lit
MSZ
EMERGENCY
COOL
↓
EMERGENCY
HEAT
↓
STOP
MSY
EMERGENCY
COOL
↓
STOP
OBH732D
