17
ELECTRONIC CONTROL SYSTEM MAINTENANCE
Display
Introduction
This section contains information on the maintenance alerts, temperature limiting, diagnostic test and how to access. The electronic
control system has a built in maintenance sub system which works constantly behind the scenes to help identify problems with the air
conditioner or control system. When maintenance is required, a service icon appeasrs on the display screen.
This icon will not be dismissed until maintenance has been performed or the problem cleared.
Note: The wrench icon may be on steady or flash, depending on severity. Maintenance should only be performed by qualified service
personell.
Testing the Display
Press the FAN MODE and FAN SPEED buttons at the same time for 3 seconds. All of the display's icons and functions
should light up. If any of them do not light up, the display should be replaced. When the buttons are released, the display
reverts to the original display.
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