Friedrich R-410A Electronic Control System Maintenance, Testing the Display, Introduction

ELECTRONIC CONTROL SYSTEM MAINTENANCE

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.

Display

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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