PAGE 4 of 61 HO-7-1237 & HO-4-1234 OIL-FIRED HEATERS
© SAMUEL JACKSON, INCORPORATED 2003 ALL RIGHTS RESERVED
WHY IS THERE A DELAY AFTER I TURN IT ON?
When the STATUS light comes on, the combustion control computer begins opening and closing
valves to test the integrity of various safety switches located in the heater's control cabinet. If it
finds a problem with one of these devices, it alerts the operator on the displays with a description
of the problem.
These diagnostics are performed every time the heater is started and continue during operation
until approximately 10 minutes after the heater is turned off. The status of post-burn testing is
shown on the displays with the time remaining.
TIPS
Always leave power on the heater during gin season. There is a permanent memory in the
combustion control computer that remembers when you turned off the power and did not permit
the computer perform its safety switch test. It will result in ERROR 456 after 6 shutdowns with
no safety switch test.
To prevent lightning damage to the surge protector and controls in the off season, it is a good
idea to turn power off to the control cabinet until it is needed again.
ALARMS and ERRORS are fully described later in this manual. They may also be found on a
decal in the burner cabinet. The decal will be helpful when reviewing error history of the heater
as only time, date, and error number are displayed. ALARMS will warn the operator of an
impending problem and ERRORS will cause an immediate shutdown.
The STATUS light at the remote control station will blink to indicate an ALARM or ERROR. A
PLC low battery alert may occasionally be displayed which will not shut down the heater or be
recorded in its error history.
WHAT IS THE “TEST PROGRAM”?
The “Test Program” can be activated by a qualified service man or trained user to test the heater.
It is always performed in the Samuel Jackson factory before shipment of a new heater and
occasionally in the field when necessary for troubleshooting. This program allows the service
man to proceed step-by-step, through a series of tests where individual components of the heater
can be tested, calibrated, and adjusted.
The test program is described fully in the
TEST SEQUENCE EXPLANATION
section of the
manual.
