Solution: 1. Change the batteries. 2. Re-install the batteries correctly
Problem: The unit does not work for 3 minutes when switched on.
Cause: Protection of the unit.
Solution: Wait for approx.3 minutes and the unit will start.
2-Hydronic Cassette SFP – KM – DLY Series
When faulty slave unit is detected, unit display area shows the faulty unit address, time area shows the error code and backlight change to red color. Should there be multiple units having problems, they will be shown one after another.
Indoor coil sensor 2 faulty (4 pipe unit)
Return air sensor faulty
Indoor coil sensor 1 faulty
Indoor coil low temperature protection
Indoor coil over heat protection
Water pump faulty
Local communication error
Led lights of lamp board on unit panel & error display
For all units Red LED light
Red LED On
For master unit indicating defect status of all slave unit
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