Graco Reactor 2 E-XP2

Troubleshootin
g
Error Location Type Description
Cause Solution
Flow is too high at
current setpoint.
Use a smaller mix chamber that
is rated for the unit in use. If
recirculating, decrease flow or
decrease temperature setpoint.
Loose or miss
ing
jumper on the
heater termi
nal
blocks
Reconnect or
install jumper.
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.
Loose heat
er
wires or
connector
.
Check for loose heater element wires
or loose green connector at TCM.
T2DA Heater A Low
Temperature
A
Bad heater
element.
Confirm resistance of heater. Heater
resistance should be 18-21 Ω
for each heater element, 9-12 Ω
combined for 10 kW systems, 6-8
Ω for 15 kW systems, and 4-6 Ω for
20 kW systems. If out of tolerance,
replace heater element.
Flow is
toohighat
curren
t setpoint.
Use a sm
aller mix chamber that
is rate
d for the unit in use. If
recirc
ulating, decrease flow or
decrea
se temperature setpoint.
Loose or missing
jumper on the
heater terminal
blocks
Reconnect or install jumper.
Bad RTD or bad
RTD placement
heater.
Swap
A and B heater output cables
and R
TD cables and see if issue
foll
ows. If so, replace RTD.
Loose heater
wires or
connector.
Check for loose heater element wires
or loose green connector at TCM.
T2DB Heater
B
Low
Temper
ature
B
Bad heater
element.
Co
nfirm resistance of heater. Heater
re
sistance should be 18-21 Ω
fo
r each heater element, 9-12 Ω
co
mbined for 10 kW systems, 6-8
Ωf
or 15 kW systems, and 4-6 Ω for
20
kW systems. If out of tolerance,
r
eplace heater element.
333024N 29