Service and Repair


Electrical Wire Position

Guideline Available here.
Applicable Series:
All Series

Halogen Light Fixture

Guideline Available here.
Fixture/Cover Dimensions for Halogen Lights

How to Install Duct Cover

Model No.: CH1120DC-1

Applicable Series:

CH22 SQB-1 SERIES CH27 SQB-1 SERIES
CH77 SQB-1 SERIES CH91 SQB-1 SERIES
CHX22 SQB-1 SERIES CHX38 SQB-2 SERIES
CHX38 SQBD-3 SERIES CHX79 SQB-1 SERIES
CHX91 SQB-1 SERIES

Model No.: RA0930DC-1 / RA0946DC-1

Applicable Series:

RA92 SQB-1 SERIES RA94 SQB-1 SERIES
CHX81 SQB-1 SERIES RAX94 SQB-1 SERIES

Model No.: RA02DC-24-1

Applicable Series:

RA02 SQB-1 SERIES RAX95 SQB-1 SERIES

Model No.: RA02DC-24

Applicable Series:

RA02 SQB-1 SERIES RAX95 SQB-1 SERIES

Duct Cover Installation for CHX38 SQBD-WM-3

Applicable Series:

CHX38 SQBD-WM-3

How to Replace Control Panel

Chinese version
English version
Applicable Series:

CH22 SQB-1 SERIES CH27 SQB-1 SERIES
CH77 SQB-1 SERIES CH91 SQB-1 SERIES
IS22 SQB-1 SERIES IS23 SQB-1 SERIES
RA22 SQB-1 SERIES RA92 SQB-1 SERIES
RA94 SQB-1 SERIES

How to Replace LED Lights

Guideline Available here.

Applicable Series:

CH00 SQB-1 SERIES CH22 SQB-1 SERIES
CH27 SQB-1 SERIES CH77 SQB-1 SERIES
CH91 SQB-1 SERIES IN26 SQB-700-2 SERIES
IN26 SQB-1200-1 SERIES IS22 SQB-1 SERIES
IS23 SQB-1 SERIES RA02 SQB-1 SERIES
RA22 SQB-1 SERIES RA38 SQB-1 SERIES
RA92 SQB-1 SERIES RA94 SQB-1 SERIES

For models with light panels, please view here.


How to Replace Halogen Light Bulb with G4 LED Bulbs

Guideline Available here.

Replace halogen bulbs with LED light


How to Replace Processor Board

Guideline Available here.

Applicable Series:

CH22 SQB-1 SERIES CH27 SQB-1 SERIES
CH77 SQB-1 SERIES CH91 SQB-1 SERIES
IS22 SQB-1 SERIES IS23 SQB-1 SERIES
RA22 SQB-1 SERIES RA92 SQB-1 SERIES
RA94 SQB-1 SERIES

How to Setup Top and Rear Exhaust

Top Exhaust Setup Process

Applicable Series:

CH22 SQB-1 SERIES CH27 SQB-1 SERIES
CH77 SQB-1 SERIES CH91 SQB-1 SERIES
CHX20 SQB-1 SERIES CHX22 SQB-1 SERIES
CHX38 SQB-2 SERIES CHX38 SQBD-3 SERIES
CHX79 SQB-1 SERIES CHX91 SQB-1 SERIES

Rear Exhaust Setup Process

Applicable Series:

CH22 SQB-1 SERIES CH27 SQB-1 SERIES
CH77 SQB-1 SERIES CH91 SQB-1 SERIES
CHX20 SQB-1 SERIES CHX22 SQB-1 SERIES
CHX38 SQB-2 SERIES CHX38 SQBD-3 SERIES
CHX79 SQB-1 SERIES CHX91 SQB-1 SERIES