Install Instructions

58
TROUBLESHOOTING
A. BLOCKING ERRORS
1. When a Blocking Error occurs the controller will display
a message and an “E” error code on the display module.
2. These error messages and several suggested corrective
actions are included in Table 10.1.
3. Certain Blocking Errors will, if uncorrected, become
Locking Errors as described is Paragraph B.
B. LOCKING ERRORS
1. When a Locking Error occurs the controller will
display a message and an “A” error code on the
display module.
2. These error messages and several suggested corrective
actions are included in Table 10.2.
3. Press the reset key to clear the Locking Error and
resume operation. Be sure to observe the operation of
the unit to prevent a recurrence of the fault.
4. The P
UREFIRE
®
control will retry for ignition after one
hour of being in a lockout condition. This will prevent
lockout errors from resulting in “No Heat” calls if
there is an intermittent problem.
5. The P
UREFIRE
®
control logs the flame signal four times
during the last 2 seconds of the ignition period. This is
to aid in troubleshooting ignition errors. A flame signal
below 2 micro-amps at the end of this period will result
in a lockout. If the flame signal is low, remove the
flame sensor and igniter for inspection. Also, be sure
that the lead to the flame sensor is not grounded.
C. ERROR MESSAGES IN A CASCADE
SYSTEM
See paragraph D and the Cascade section of Appendix A
for further information on how errors are displayed when
using a Cascade System.
10. TROUBLESHOOTING
If overheating occurs or the gas supply fails to shut
off, do not turn off electrical power to the circulating
pump. This may aggravate the problem and increase
the likelihood of boiler damage. Instead, shut off the
gas supply to the boiler at the gas service valve.
CAUTION
DANGER
When servicing or replacing components that are in
direct contact with the boiler water, be certain that:
• There is no pressure in the boiler. (Pull the release
on the relief valve. Do not depend on the pressure
gauge reading).
• The boiler water is not hot.
• The electrical power is off.
When servicing or replacing any components of this
boiler be certain that:
• The gas is off.
• All electrical power is disconnected.
WARNING
Do not use this appliance if any part has been under
water. Improper or dangerous operation may result.
Contact a qualified service technician immediately to
inspect the boiler and to repair or replace any part of
the boiler which has been under water.
WARNING
Label all wires prior to disconnection when servicing
controls. Wiring errors may cause improper and
dangerous operation. Verify proper operation after
servicing.
CAUTION
The convenience outlet is powered even when the
service switch is off.
CAUTION
Figure 10.1