20
TROUBLESHOOTING (continued)
If
"Err"
IS displayed on the IQ Boiler Control: "
Err
" flashes on the IQ Boiler control display followed
by a number. Use the following table along with this error number to determine the problem and possible
causes:
IQ Boiler Control Error Codes (when
"
Err
"
is flashing)
Display
Status
Boiler / Control Action(s)
Blank
Boiler and Circulator off No 120 Vac power at boiler, check breaker and wiring between breaker panel and boiler.
Err
2
Pressure Switch Failed
to Open
While the blower is “off” the pressure switch failed to open (contacts stuck closed), check
wiring and check pressure switch.
Err
4
Flame Current Lower
than Threshold
Check pilot assembly.
Err
6
Flame Sensed Out of
Normal Sequence
Flame sensed out of normal sequence (before opening gas valve or after closing gas
valve).
Err
18
Electronics Failure
Replace Control .
Err
23
Flame Sensed During
Pre-Purge
Flame sensed during pre-purge (before gas valve signaled opened).
Err
29
Pressure Switch Failed
to Close
While the blower is “on” the pressure switch failed to close, check wiring, check that the
blower is running and check pressure switch.
Err
32
Temperature Sensor
Failure
Temperature sensor or interface failure (open or short connection, increased connection
resistance, dual sensor mismatch) or control hardware failure.
Err
57
Flame Rod Shorted to
Burner Ground
Flame Rod shorted to burner ground, this can result from excessive flue gas
condensation.
Err
58
AC Line Frequency Error AC Signal is too noisy or frequency is incorrect.
Err
59
Line Voltage Error
AC voltage out of specification high or low.
Err
60
Thermostat Input Higher
than Threshold
Check thermostat wiring.
Err
61
Line Voltage Unstable
Possibly too many heavy loads switching on and off cause erratic supply voltage.
Err
63
Soft Lockout - Maximum
Recycles Exceeded
Maximum number of recycles exceeded. For additional information refer to
10
on
previous page.
Err
64
Soft Lockout - Internal
Failure
Caused by general electronics failure such as relay open or shorted contacts, flame
sensing circuit error, or A to D error.
Содержание ESC
Страница 6: ... Figure S 1 Minimum Clearances to Combustibles SPECIFICATIONS continued ...
Страница 30: ...30 Internal Wiring Figure IW 1 Wiring Diagram ...
Страница 31: ...31 Internal Wiring continued Figure IW 2 Wiring Diagram ...
Страница 37: ...37 APPENDIX B1 INTENTIONALLY OMITTED ...
Страница 50: ...50 Figure D 0 Piping Schematic Symbols APPENDIX D System Piping continued ...
Страница 62: ...62 SERVICE RECORD DATE SERVICE PERFORMED ...
Страница 63: ...63 SERVICE RECORD DATE SERVICE PERFORMED ...
Страница 64: ...64 U S Boiler Company Inc P O Box 3020 Lancaster PA 17604 717 397 4701 www usboiler burnham com ...