
Error
Error
Error
Location
Location
Location
Type
Type
Type
Description
Description
Description
Cause
Cause
Cause
Solution
Solution
Solution
Module fan not
operating
If a TCM fan error
(WMI0) has occurred,
fan inside the module
is not working properly.
Check TCM fan for debris
and clear with forced air
if necessary.
Bad RTD or bad
RTD placement
against heater
Swap A and B heater
output cables and RTD
cables and see if issue
follows. If so, replace
RTD.
T4DA
Heater A
High Temperature
A
Flow too high
for temperature
setpoint, causing
temperature
overshoots
when gun is
de-triggered
Use a smaller mix
chamber that is rated
for the unit in use.
Bad RTD or bad
RTD placement
against heater
Swap A and B heater
output cables and RTD
cables and see if issue
follows. If so, replace
RTD.
T4DB
Heater B
High Temperature
B
Flow too high
for temperature
setpoint, causing
temperature
overshoots
when gun is
de-triggered
Use a smaller mix
chamber that is rated
for the unit in use.
Hose portion
exposed to an
excessive heat
source, like hot
sun or coiled
hose, can pass
fluid more than
27°F (15°C) over
hose temperature
setting to the FTS
Shade exposed hose from
hot sun or expose FTS to
same environment when
at rest. Uncoil entire
hose before heating to
avoid self-heating.
Setting the A
or B setpoint
much higher than
hose setpoint
can cause fluid
more than 27°F
(15°C) over hose
temperature
setting to reach
the FTS.
Increase hose setpoint
so it is closer to A and B
setpoints.
T4DH
Hose
High Temperature
Hose
334946J
31