Troubleshooting Guide

ManualsBrandsMRCOOL ManualsDIY Mini SplitsDIY 36000BTU 3-Ton 4-Zone Ductless MiniSplit A/C&Heat Pump 230V/60 Hz W/1 ft./16 ft., 25 ft., 35 ft., 75 ft. Line Set

Troubleshooting 12

5. Outdoor Unit Point Check Function

• A check switch is included on the outdoor PCB.

• Push SW1 to check the unit’s status while running. The digital display shows the

following codes each time the SW1 is pushed.

For some models,

Number of

Presses

Display Remark

0 Normal display Displays running frequency, running state, or malfunction code

Quantity of indoor units with

working connection

Display Number of indoor unit

1 1

2 2

3 3

4 4

Outdoor unit running mode

code

Standby: 0,Fan only: 1, Cooling: 2, Heating: 3, Forced cooling:

4, Forced defrostling: A

3 Indoor unit A capacity

The capacity unit is horse power. If the indoor unit is not

connected, the digital display shows the following: “--”

(9K:1HP,12K:1.2HP,18K:1.5HP)

4 Indoor unit B capacity

5 Indoor unit C capacity

6 Indoor unit D capacity

7 Indoor unit E capacity

Indoor unit A capacity demand

code

Norm code*HP

(9K: 1HP,12K: 1.2HP,18K: 1.5HP)

Indoor unit B capacity demand

code

Indoor unit C capacity demand

code

Indoor unit D capacity demand

code

Indoor unit E capacity demand

code

Outdoor unit mandatory

capacity demand code

The frequency corresponding

to the total indoor units'

amendatory capacity demand

The frequency after the

frequency limit

The frequency sending to

compressor control chip