38
APPENDIX A - CONTROL MODULE
59
Line voltage error
Line voltage (or, possibly
thermostat) is either to high
or to low.
Source problem is likely in the electrical
external to the boiler. Control will clear
itself and resume normal operation once
the situation is resolved. Check BOTH line
power and thermostat wiring.
60
Thermostat input
higher than
threshold
Some types of thermostat
may not be compatible with
control circuitry.
Verify boiler works properly by jumping
yellow thermostat wires. If so, replace
thermostat (or thermostat wires).
61
Line Voltage
unstable
Unstable line voltage -
possibly to many heavy loads
switching on and off.
1. Check current draw on this branch
circuit from house breaker box might
have very heavy loads switching on or
off.
2. Check power coming into the house.
Source problem is likely in the electrical
external to the boiler. Control will clear
itself and resume normal operation once
the situation is resolved.
62
Soft Lockout-Max
retries exceeded
Control sensed consecutive
instances of no flame signal
while trying to light pilot.
Note: not present on
S9261A2095.
1. Check control ground connection.
2. Check pilot ignition wire for good
condition and connection.
3. Clean pilot tip.
4. Check pilot tube, assure no gas leaks.
5. Check correct pilot orifice is being used.
6. Check gas line pressure.
63
Soft Lockout - Max
recycles exceeded
Control sensed consecutive
instances of loss of pilot flame
signal AFTER main burners
are lit. Note: not present on
S9261A2095.
1. Check gas valve & gas supply.
2. Check all electrical connections are
tight.
3. Check pilot rod is clean.
4. Check for adequate draft.
5. Check for adequate combustion air.
64
Soft Lockout -
Internal failure
Control is sensing something
wrong with electrical circuitry.
1. Check all wiring is correct. Refer to
wiring diagram.
2. Check there is a good ground to pilot
bracket.
65
Hard Lockout -
Temperature above
limit
(Soft Lockout on
S9361A2098)
(S9361A2098)
Control sensed water
temperature too high for safe
boiler operation
1. Check water is circulating properly
through boiler.
2. Check there is not air in the system.
3. If pressure relief valve is opened,
there is definitely a problem with water
circulation!
4. If any of the above 3 are true, root
problem is in the hot water circulation.
5. Scroll display reading to "bt" , and hold
sensor bulb securely in your hand. It
should read a temperature close to body
temperature. If not, replace sensor.
Note: In event of multiple errors, the highest error number is displayed first.
Note: Error codes 18 and 65 - Hard Lockout will not expire. Requires operator reset. No volatile memory (error will not be remembered if power is
off).
Error codes 6, 23, 62,63 and 64 - Soft Lockout of 1 hour duration if not reset. Control will then resume normal operation. If source error is still
present a second soft lockout it possible.
All other codes - No lockout. Control will resume normal operation immediately when source error is resolved.
Table A7 - Troubleshooting Error Codes - conti.
Error
Code
Number
Definition
Error Display clearing ( once error condition has disappeared)
Clears itself
when root
problem is
solved
Cycle
Power
OFF
Push
any
key
Up/down
key when
status is
displayed
Explanation
Things to look for
IM-BWBC-01
[240012884 REV C, 11/15/2020]
