Step 3: Remove the dirt from the outside walls of the heat exchanger with a vacuum cleaner.
Caution: Never use water or any other cleaning materials.
Return air and humidity sensor
location.
Outdoor air sensor location.
Vacuum Cleaner
Page 27 of 32
10.3 Sensor Replacing Instruction
1
1
2
2
WARNING
Step 1: Slide the service cover to the left, open it and remove the filters.
THE FAN AND ANCILLARY CONTROL EQUIPMENT MUST BE ISOLATED
FROM THE POWER SUPPLY DURING MAINTENANCE.
Remove the Filters
Open the
Service Cover
Slide the
Service Cover Left
Danger
Electric Shock
risk
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