Publicité
TROUBLESHOOTING GUIDE
The display
doesn't work.
The display
shows the
letter "P"
The Defective
Probe Pilot
Light is on.
The display
shows
sudden
variations in
the ambient
temperature.
TC4-4M.rev.03
The circuit breaker on
the service panel is off
or tripped.
The wiring is incorrect.
The F5 input fuse is
open.
The voltage selector
switch is in the wrong
position.
The display board
interconnect cable is
unplugged from the
power supply board.
The probe correspond-
ing to the zone se-
lected is improperly
connected.
One or more probes
are defective.
A variation in resist-
ance is induced on a
probe.
There is electrical
noise near an ex-
tended probe cable.
Reset the circuit breaker.
Fix the wiring.
Replace the fuse.
Set the switch to the correct
position.
Plug the cable.
Fix the probe's connection.
Follow the procedure described
in DEFECTIVE PROBES to
identify and replace the defec-
tive probe.
Make sure the probes are dry
and move them away from
drafts and sources of radiant
heating.
Do not run probe cables next to
other power cables. When
crossing other power cables,
cross at 90
.
o
Publicité
