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TROUBLESHOOTING
10. 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 boiler 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 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.
WARNING
When servicing or replacing any components of this
boiler be certain that:
• The gas is off.
• All electrical power is disconnected.
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.
46
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.
CAUTION
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
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.
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