Graco Reactor 2 Repair Parts page 34

Troubleshooting
Error Location
Error Error Location Location
T6DT TCM
Heater A
T8DA
34
Type Description
Type Type Description Description
Sensor Error TCM
No Temperature
Rise A
Cause Cause Cause Solution
Solution Solution
Shorted RTD Expose each hose RTD
cable in hose connection to check for
or FTS exposed and shorted
RTD wires. Measure hose
RTD cable and FTS conti-
nuity. See
Hose, page
RTD Test kit 24N365 for
measurement.
Disconnect the hose RTD
and use Hose Manual
Mode or Hose Resistance
Mode to continue the job
until repair can be com-
pleted. Hose Resistance
Mode requires a saved
calibration factor. Refer
to your proportioner op-
eration manual to enable
Hose Control Modes.
Shorted A or B
If the error still occurs
Heater RTD
with the hose FTS
unplugged, one of
the heater RTDs is
bad. Unplug the A or
B RTD from the TCM. If
unplugging an RTD fixes
the T6DT error, replace
the RTD.
Bad RTD or bad Swap A and B heater
RTD placement output cables and RTD
against heater cables and see if issue
follows. If so, replace
RTD.
Bad heater Confirm resistance of
element heater. Heater resistance
should be 9-12 Ω for 10
kW systems, 6-8 Ω for
15 kW systems, 4–6 Ω for
20 kW systems. If out of
tolerance, replace heater
element.
Loose heater Check for loose heater
wires element wires.
Started spraying Wait until operating
before heater temperature has been
reached reached before spraying
operating or recirculating.
temperature
Repair Heated
65. Order
334946J