Lennox VHA 30, Installation Operating & Maintenance Manual, Page: 15 / 46

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12. Off Timer Function(3HP, 5HP)
This function is to set the time of stopping the unit operation.
The procedure is as the following.
1st: Press the timer set button on the Remocon.
2nd: The buzzer sounds and then the display window shows the Off-Time to be set as 1:00
...
7:00 0:00.
- The Off-Time is shifted as the following by each press.
- If you select '0:00', the Off-Timer function will be cancelled.
- During Off-Timer Operation, if you repress the timer set button, the rest time will be displayed.
13. Alarm mode display / only displayed while operating.
C CH H 0 0
: The sensor for sensing room temperature is open or short.
C CH H 1 1
: The sensor for sensing piping temperature of evaporator is open or short.
C CH H 2 2
: Some keys of the display are out of order or short.
C CH H 4 4
: The sensor for sensing discharge temperature is open or short.
14. Function for test operation.
This function shall be operated while the set not operating and start while the fan speed and start/stop buttons
pressing continuously for 3 seconds.
If you press start/stop button continuously for 3 seconds while the fan speed button pressing once more test
operation and the set shall be stopped.
After test operation operating and 18 minutes, test operation and the set shall be stopped.
If you press start/stop button while test operation operating, test operation shall be stopped and the set shall
start.
When test operation operating, the display of
8 88 8: :8 88 8
shall be shifted to TEST
But, while child lock function operating,
L LO OC C
shall be displayed instead of TEST.
4-way valve is always off when test operation.
Fan speed is high, air purifying system and auto air flow operations are off when test operation.
Regardless of outside temperature, the set operates when test operation.
But, the set stops when 3 minutes delay mode.
All but start/stop and air purifying system buttons cannot be set.
15. Function of changing set temperature when re-operation after stop.
Heating operation is set to the previous set temperature when re-operation after stop. Cooling operation is set
to the previous set temperature when re-operation with start/stop button.
1.Operation mode.
Cooling/soft dry mode Cooling mode
Heating mode Heating mode
2. Setting the set temperature when cooling operation.
Room temperature > Set temperature: to be set to the previous set temperature.
Room temperature
≤
Set temperature
a) Room temperature
≥
26°C: to be set to 24°C
b) 22°C
≤
Room temperature
≤
25°C: to be set to 21°C
c) Room temperature
≤
21°C:to be set to -1°C less than room temperature.
3. Setting the set temperature when heating operation.
Set the previous set temperature when stopped.
1:00 2:00 3:00 4:00 5:00 6:00 7:00 0:00