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Installation & Operation Manual -
VFH-MB 09/12/18/24 Series
3
2
9.2 Procedure of Troubleshooting
1. Malfunction of Temperature Sensor F1, F2
Start
Insert the temperature
sensor tightly
yes
Malfunction is
eliminated.
Secure
the parts
yes
Malfunction is
eliminated.
Replace the controller
with
one of the
same model
End
no
no
no
no
yes
yes
Malfunction is
removed.
no
yes
yes
no
Is the wiring
terminal between temperature
sensor and the controller loose or
poor
l
y
con
nect
ed?
Is there short
circuit due to
loose par
ts?
Is the temperature
sensor normal
according to the
Resistance Table?
Replace
it with a
temperature
sensor
of the same model
Summary of Contents for B-VFH18MB-1
Page 39: ...Installation Operation Manual VFH MB 09 12 18 24 Series 39 Exploded View Model B VFH12MB 1...
Page 41: ...Installation Operation Manual VFH MB 09 12 18 24 Series 41 Exploded View Model B VFH18MB 1...
Page 43: ...Installation Operation Manual VFH MB 09 12 18 24 Series 43 Exploded View Model B VFH24MB 1...