Graco Reactor 2 E-XP2

Troubleshootin
g
Error Location Type Description
Cause Solution
Inlet pressure
lower than
defined value.
Ensure that inlet pressure to the
pump is sufficient.
P1FB
MCM
Low Inlet
Pressure B
Value defined too
high.
Ensure that th
e low pressure alarm
level defined
on the System Setup
screen is acc
eptable.
Inlet pressure
lower than
defined value.
Ensure that inlet pressure to the
pump is sufficient.
P2FA
MCM
Low Inlet
Pressure A
Value define
dtoo
high.
Ensure that the low pressure alarm
level defined on the System Setup
screen is acceptable.
Inlet pres
sure
lower than
defined va
lue.
Ensure tha
t inlet pressure to the
pump is suf
ficient.
P2FB
MCM
Low Inlet
Pressure B
Value defined too
high.
Ensure that the low pressure alarm
level defined on the System Setup
screen is acceptable.
System
pressur
ized
before a
llowing
heat to
reach
setpoi
nt.
Pressure in the hose and pumps will
increase as the system heats up.
Turn on heat and allow all zones
to reach the temperature setpoint
before turning on the pumps.
Bad pressure
transducer.
Verify the ADM pressure reading and
the analog gauges at the manifold.
P4AX
MCM
High Pressure
A
E-XP2
system
config
ured as
E-30
.
Alarm level is lower for E-30 than for
E-XP2. Ensure dial on MCM is set to
position "3" for E-XP2.
Syst
em
pres
surized
bef
ore allowing
hea
ttoreach
set
point.
Pressure in the hose and pumps will
increase as the system heats up.
Turn on heat and allow all zones
to reach the temperature setpoint
before turning on the pumps.
Bad pressure
transducer.
Verify the ADM pressure reading and
the analog gauges at the manifold.
P4BX
MCM
High Pressure
B
E-
XP2 system
co
nfigured as
E-
30.
Alarm level is lower for E-30 than for
E-XP2. Ensure dial on MCM is set to
position "3" for E-XP2.
2
4
333024N