Troubleshootin
g
Error Location Type Description
Cause Solution
Bad RTD or bad
RTD placement
against heater.
Swap A and B hea
ter output cables
and RTD cables
and see if issue
follows. If so
, replace RTD.
Loose heater
wires or
connector.
Check for loose heater element wires
or loose green connector at TCM.
Bad heater
element.
Confirm resi
stance of heater. Heater
resistance
should be 18-21 Ω
for each hea
ter element, 9-12 Ω
combined fo
r10kWsystems,6-8
Ω for 15 kW s
ystems, and 4-6 Ω for
20 kW syste
ms. If out of tolerance,
replace he
ater element.
T8DB Heater B No
Temperature
Rise B
Started spraying
before heater
reached
operating
temperature.
Wait until operating temperature has
been reached before spraying or
recirculating.
T8DH Hose No
Tempera
ture
Rise Ho
se
Started spraying
before heater
reached
operating
temperature.
Wait unt
il operating temperature has
been rea
ched before spraying or
recirc
ulating.
Loose/bad
connection or
tripped circuit
breaker.
Check
wiring for loose connection or
tripp
ed circuit breaker.
V1CM MCM
Low Voltage
MCM
Low i
ncoming
line
voltage.
Meas
ure voltage at circuit breaker
and e
nsure voltage is greater than
195 V
AC.
Mis-adjusted
24 VDC power
supply.
Measure voltage of power supply.
Voltage should be 23-25 VDC. If out
of tolerance, adjust output voltage to
approximately 24 VDC.
Short circuit
or intermittent
connection in
wiring.
Reference schematics in repair
manual. Trace all CAN cables and
check all connections.
V1IT
TCM
Low Voltage
CAN
B
ad 24 VDC
p
ower supply.
I
f voltage can not be adjusted back
i
nto tolerance range, replace power
s
upply.
333024N 39
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