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ROBERTS GORDON
®
ULTRAVAC™ CONTROLLER INSTALLATION MANUAL
40
Troubleshooting Flow Chart (continued)
Consult wiring instructions
in 200 Series Pump Manual
(P/N 127200NA) or EP-300
Series Pump Manual (P/N
127202NA) for reversal
instructions.
No
Replace filters as necessary.
Replace the electrodes.
Adjust the gap or
replace the electrode.
Ignition module may have
failed. Replace module.
Electrode gap should be
1/8". Is the gap too small?
No
Yes
Inspect the electrodes on the
affected burners. Are they
burned or damaged?
No
Yes
Couplings may be installed
improperly. Lined couplings
should be used for tailpipe.
All couplings should be
snug around tube.
Make sure that all
sensor set points are
satisfied.
Do burners shut off after the
call for heat is satisfied?
Yes
No
Check for blockage in the
outside air supply or for
leaks in the system.
Replace filters as necessary.
No
Yes
Are the filters on the
burners dirty?
Is the rotation of the
pump motor correct?
Yes
No
Adjust system for proper
vacuum at the end vent.
See Commissioning of the
CRV System for details.
Is the vacuum setting
too low?
No
Yes
Is the flame low?
No
Yes
No
Yes
Are the filters on the
burners dirty?
Yes
No
Is the rotation of the
pump motor correct?
Follow burner check
procedure given above.
No
Yes
Are there any "dead"
burners in a branch?
Is the vacuum setting
too low?
No
Yes
Is the system leaking water?
No
Yes
Do the burners lockout
intermittently?
No
Yes
Make sure that all
sensor set points are
satisfied.
Does the pump shut down
after a 2 minute post-purge
period?
Yes
No
TROUBLESHOOT ENDS.
If problems persist, contact
your
ROBERTS GORDON
®
Independent Distributor.
Contact
Roberts-Gordon at
www.rg-inc.com
Adjust system for proper
vacuum at the end vent.
See Commissioning of the
CRV System for details.
Yes
Consult wiring instructions
in 200 Series Pump Manual
(P/N 127200NA) or EP-300
Series Pump Manual (P/N
127202NA) for reversal
instructions.