750-204
Profire D/LND
6-1
CHAPTER 6 Troubleshooting
6.1 — Awareness
Chapter 6 assumes that:
• The unit in question has been properly installed and that it has been running for some time.
• The operator has become thoroughly familiar with both the burner and the manual by this time.
The points set forth under each heading are brief, possible causes, suggestions or clues to simplify locating the
source of the trouble. Methods of correcting the trouble, once it has been identified, may be found elsewhere in
this manual.
If the burner will not start or operate properly, the Troubleshooting section should be referred to for assistance in
pinpointing problems that may not be readily apparent.
The program relay has the capability to self-diagnose and to display a code or message that indicates the failure
condition. Refer to the control bulletin for specifics and suggested remedies.
Familiarity with the programmer and other controls in the system may be obtained by studying the contents of
this manual. Knowledge of the system and its controls will make troubleshooting that much easier.
Troubleshooting should be performed only by personnel who are familiar with the equipment and who have read and
understood the contents of this manual. Failure to follow these instructions could result in serious personal injury or
death.
Disconnect and lockout the main power supply in order to avoid the hazard of electrical shock. Failure to follow these
instructions could result in serious personal injury or death.
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