Outdoor Unit Spot Check Function - Lennox MPA009S4S Service Manual

19.3. Outdoor Unit Spot Check Function

There is a check switch in outdoor PCB. Push the switch SW1 to check the states of unit when the unit is running. The digital
display tube will display the follow procedure when push SW1 each time.
Display
0 Normal Display
1 Quantity of indoor units in good connection
2 Outdoor unit running mode
3 Indoor unit A capacity
4 Indoor unit B capacity
5 Indoor unit C capacity
6 Indoor unit D capacity
7 Indoor unit E capacity
Figure 63. SW1 Location
Table 3. Status Indicators
Remark
Display running frequency, running state or malfunction code
Actual data
Display
1
2
3
4
5
Off: 0, Fan only: 1, Cooling: 2, Heating: 3, Forced cooling: 4
The capacity unit is horse power. If the indoor unit is not connected, the digital display
tube will show: "――"
(9K:1HP,12K:1.2HP,18K:1.5HP)
91
SW1
Number of indoor units
one
two
three
four
five