User Guide

Installation & Operation Manual - VFH-MB 09/12/18/24 Series
31
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
poorly connected?
Is there short circuit due to
loose parts?
Is the temperature
sensor normal according to the
Resistance Table?
Replace it with a
temperature sensor
of the same model