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1. Check if fan terminal
OFAN is connected well
2. Test if resistance value
of any two terminals is less
than 1k with ohmic meter
If the indoor and outdoor
fan work well?
After the unit de-
energized for 20min
Replace
control board
AP1
If the radiating of outdoor
and indoor unit is well?
Improve the
radiating
environment of
unit
Replace
outdoor fan
Y
Replace fan
capacitor C1
Anti-high temperature,
overload protection
Normal protection, please use
it after improve the outdoor
ambient temperature
If the outdoor ambient temperature is
higher than 53 ºC?
N
Y
N
Y
N
End
Summary of Contents for GWH12TB-S3DNA1B/I
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Page 49: ...6TQWDNGUJQQVKPI QGRRU IDQ GRHV QRW RSHUDWH DC motor interface sketch...
Page 51: ...6TQWDNGUJQQVKPI XPSHU FDS PDOIXQFWLRQ Jumper cap interface sketch...
Page 53: ...6TQWDNGUJQQVKPI RPPXQLFDWLRQ PDOIXQFWLRQ Indoor unit communication indicator sketch...
