Johnson Controls (H,Y,C)IDM012B21S Installation And Maintenance Manual page 2

Inverter-driven multi-split system heat pump air conditioners

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Each model number and all matching model numbers within a system must have

the same version of software.

Follow these steps to verify that your product model numbers have the same

version of software.

• Access the main printed circuit board in each product.

• Locate a white sticker with a P-XXXX number or

• Connect a service checker and locate the ROM number.

For further assistance, please contact our Technical Support Center at 1 (844)

873-4445 and select Option 2.

ATTENTION

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