SIM+ Status Indicators
LED 1
LED 2
State
Description, LED status indication
On
On
Heating
LED 1 On = Flame detected
LED 2 = Burner-on call state
Rapid flash
On
Igniting
LED 1 Flashing - Electrode sparking
LED 2 = Burner-on call state
Off
Flashing
Lockout
Possible errors:
An operating limit was
exceeded
A sequence failed
An external sensor fault was
detected.
Flash alternately
with LED 2
Flash alternately
with LED 1
Fail-safe
An error was detected - the boiler
requires a power cycle
Table 13
SIM+ LED status Indicators
8.2 Troubleshooting error messages
Warning
Never attempt to repair the control module (circuit board). If the control module is
defective, replace it immediately.
Errors shown on the touchscreen controller are described below as well as diagnoses and fixes.
The bottom line of the touchscreen displays the boiler's error status. The following colors
represent the boiler's operating status:
Green – Normal
Yellow – Warning
Red – Alarm
The text inside the bar will indicate the specific warning or alarm. If there is more than one alarm
present the text will scroll slowly through all current alarm conditions. Besides the errors listed
below, see also
Miscellaneous touchscreen controller errors on page 95
92
Section: Troubleshooting
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