4215-109 G
10/30/09
SECTION 14: TROUBLESHOOTING
If control displays "SN" it means no sensor is connected. Refer to Section 4 for sensor installation
information.
If control displays "HL" it means the high limit is open and the heater is too warm. Refer to Section 7 for high
limit information. There is one high limit for each system. Need to determine which system is operating to
know which high limit is alarming.
System won't start to heat, ensure the system is not in the delay mode. If ":"is flashing in the time display the
system is in the delay mode.
For troubleshooting or service questions call 1-888-780-4427 and ask to speak with service. Prior to calling,
please have the Model and Type number available. You may also e-mail at [email protected]
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