Watlow F4T Install & Troubleshooting • 38 • Chapter 5 Troubleshooting
Indication Description Possible Cause(s) Corrective Action
Heater Error Heater Error • Current through load is
above current trip set
point
• Current through load is
below current trip set
point
• Check that the load cur-
rent is proper. Correct
cause of over current
and/or ensure current
trip set point is correct.
• Check that the load cur-
rent is proper. Correct
cause of undercurrent
and/or ensure current
trip set point is correct.
Current Error Load current incor-
rect.
• Shorted solid-state or
mechanical relay
• Open solid-state or me-
chanical relay
• Current transformer load
wire associated to wrong
output
• Defective current trans-
former or controller
• Noisy electrical lines
• Replace relay
• Replace relay
• Route load wire through
current transformer
from correct output,
select the output that is
driving the load.
• Replace or repair sensor
or controller
• Route wires appropri-
ately, check for loose
connections, add line
lters
Menus inac-
cessible
Unable to access
screens or particu-
lar parameters of
interest
• Security set to incorrect
level
• Verify password accu-
racy
• Login using appropriate
credentials
Wrong time
and date
Real time clock
resets every time
power is lost
• Battery not installed
• Polarity reversed
• Bad battery
• Install battery per in-
structions
• Place battery with posi-
tive side of battery fac-
ing up in the holder
• Replace battery
Anderson-Bolds ~ 216-360-9800
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