Graco Reactor 2 H-30 Repair Manual page 24

Troubleshooting
Error Location
Error Error Location Location
P2FB HCM
P4AX HCM
P4BX HCM
24
Type Description
Type Type Description Description
Low Inlet Pressure B
High Pressure A
High Pressure B
Cause Solution
Cause Cause Solution Solution
Inlet pressure Ensure that inlet pressure
lower than defined to the pump is sufficient.
value.
Value defined too Ensure that the low
high. pressure alarm level
defined on the System
Setup screen is acceptable.
System Pressure in the hose and
pressurized before pumps will increase as the
allowing heat to system heats up. Turn on
reach setpoint. heat and allow all zones
to reach the temperature
setpoint before turning on
the pumps.
Bad pressure Verify the ADM pressure
transducer. reading and the analog
gauges at the manifold.
Replace transducer if they
do not match.
H-XP2 or H-XP3 Alarm level is lower for
system configured
H-30, H-40 and H-50 than
as H-30, H-40, or for H-XP2 and H-XP3..
H-50. Ensure dial on HCM is set
to position "3" for H-XP2 or
"4" for H-XP3.
System Pressure in the hose and
pressurized before pumps will increase as the
system heats up. Turn on
allowing heat to
reach setpoint. heat and allow all zones
to reach the temperature
setpoint before turning on
the pumps.
Bad pressure Verify the ADM pressure
transducer. reading and the analog
guages at the manifold.
H-XP2 or H-XP3 Alarm level is lower for
system configured H-30, H-40 and H-50 than
as H-30, H-40, or for H-XP2 and H-XP3..
H-50. Ensure dial on HCM is set
to position "3" for H-XP2 or
"4" for H-XP3.
334946C