Troubleshooting
Error Location Type Description
Cause Solution
Inlet p re ssure
lower than defined
value.
Ensure that inlet pressure
to the pum p is sufficient.
P2FB
MCM
Low Inlet Pressure B
Value define d too
high.
Ensure that the low
pressure ala rm level
defined on the System
Setup scree n is acc ep tab le.
System
pressurized before
allowing heat to
reach setpoint.
Pressure in the hose and
pumps will increase as the
system heats up. Turn on
heat and allow al l zones
to reach the temperature
setpoint before turning on
the pumps.
Bad pressure
transducer.
Verify the ADM pressure
readingandtheanalog
gauges at the manifo ld.
P4AX MCM High Pressure A
E-XP2 system
configured as E-30.
Alarm level is lower for E-30
than for E-XP2. Ens ure dial
on MCM is set to position
"3" for E-XP2.
System
pressurized before
allowing heat to
reach setpoint.
Pressure in the hose and
pumps will increase as the
system heats up. Turn on
heat and allow al l zones
to reach the temperature
setpoint before turning on
the pumps.
Bad pressure
transducer.
Verify the ADM pressure
readingandtheanalog
guages at the manifo ld.
P4BX
MCM
High Pressure B
E-XP2 system
configured as E-30.
Alarm level is lower for E-30
than for E-XP2. Ens ure dial
on MCM is set to position
"3" for E-XP2.
333024F
21
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