JFD KI40018AA, Operation And Maintenance Manual, Page: 42 / 110

34
Chapter 5
KI-OM-6768 R0
System Inoperable, No
fault INdicator Burned out fault light. Replace.
Faulty fault relays, R1 and R2. Replace.
No 24 VDC Control
Power Control power supply unit faulty. Check output of power supply. If it is
not 24 V on the feed with 440 V on the
supply, replace power supply unit.
Control power fuse F3 burned out. Replace.
Fault Lights Will Not
Come On Faulty fault relays. Replace.
Burned out fault lights. Replace.
Remote & Local
Temperature
Readings Different The remote display is not calibrated to
the controller output. Check the bias, ratio and offset setting
on the controller and the remote
display.
Refer to the appendix section for the
controller for manual and details on the
controller parameter settings.
Remote Analog Dial
Not Calibrated To
Controller If there is incorrect scaling between the
remote potentiometer and the
temperature controller, the pointer
knob may be loose or incorrectly
aligned. Remove the pointer, re-align and refit.
If the analogue range scale is incorrect
the bias and/or ratio of the input on the
local temperature controller may have
been tampered with or the signal
generator may be faulty. Check that the controller settings have
not been changed and that the output
from the signal generator is within
specification.
Problem Possible Cause Solution