CleaverBrooks 4WI - CHAPTER 7 Troubleshooting; 7.1 - Introduction

750-211 (revised 2009)
Promethean Boilers, Model 4WI Manual
7-1
CHAPTER 7 Troubleshooting
7.1 — Introduction
Chapter 7 assumes that the unit has been properly installed and adjusted, and that it has been running for some
time. It is further assumed that the operator has become thoroughly familiar with both burner and manual by this
time. The points under each heading are set down briefly as possible causes, suggestions or clues to simplify locat-
ing the source of 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 chapter 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 much easier. Costly downtime or
delays can be prevented by systematic checks of actual operation against the normal sequence to determine the
stage at which performance deviates from normal. Following a routine may possibly eliminate overlooking an obvi-
ous condition, often one that is relatively simple to correct.
If an obvious condition is not apparent, check the continuity of the circuits with a voltmeter or test lamp. Each cir-
cuit can be checked and the fault isolated and corrected. Most circuitry checking can be done between appropriate
terminals on the terminal boards in the control cabinet or the entrance box. Refer to the schematic wiring diagram
for terminal identification.
Troubleshooting should be performed only by personnel familiar with the equipment and who have read and under-
stood the contents of this manual. Failure to follow these instructions could result in serious injury or death.
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Warning