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17
Outdoor Unit Functions
OTHER CONTROLS
Initial Setup
There are four (4) initial setup steps before operation can begin. All DIP switch settings must be completed before initial setup.
Step 1
Factory set value is displayed on the PCB LED for twenty-four (24) seconds.
Turn power on.
Code for the Master outdoor unit is
displayed for three (3) seconds.
Code for the Slave 1 outdoor unit is
displayed for three (3) seconds.
Code for the Slave 2 outdoor unit is
displayed for three (3) seconds.
Total system capacity is displayed for two
(2) seconds.
System type is displayed (2 is default).
• Heat Pump = 2
• Heat Recovery = 3
Electrical requirements are displayed.
• 208 = 22
• Heat Recovery = 46
Model Type.
14
12
10
36
2
46
1
Step 2
Communication Check: If display follows all sequences as shown above, the communication between the Master and Slave outdoor units
is normal. If the LED shows Error Code 104*, check the DIP switch settings and the communication cables between the Master and Slave
outdoor units.
Step 3
PCB Error Check: Error check will begin after forty (40) seconds.
Master / Slave unit
• All errors of all the units (including Slave) will be shown on the LED.
• If communication between main PCB and inverter PCB isn’t correct, Error Code 52* will be seen on the LED.
• If communication between main PCB and fan PCB isn’t normal, Error Code 105* will be seen on the LED.
• If any errors are displayed, check corresponding wires / cables.
Initial Setup
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