SAMUEL JACKSON HG-1-1501, Service And Operation Manual

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PAGE 16 of 46 HG-1-1501 GAS-FIRED HEATER
© SAMUEL JACKSON, INCORPORATED 2011 ALL RIGHTS RESERVED
ERROR 137
GAS VALVE LEAK, DOWNSTREAM: This ERROR is caused by a leak in either the pilot
valve (PV) or the second SSOV valve. These are both "downstream" gas valves. The test
program may be run to determine the severity of the leak. See the Gas Low Pressure
TESTS for details. Contact the factory for technical assistance.
ERROR 140
RESTART NOT PERMITTED. NO LEAK TEST PERFORMED FOR PAST SIX
SHUTDOWNS: Automatic gas leak testing has been interrupted for the past 6 shutdowns.
Each time the burner is turned off, the PLC attempts to spend about 10 minutes
performing an automatic leak check on the gas valve assembly. These tests can be
interrupted by simply turning off the power or restarting the burner before the 10 minutes
has ended. The PLC demands that a leak test be performed at least once every 7
shutdowns. If each of the past 6 shutdowns have had the leak test interrupted, the PLC
will not start until the SELECT button is pressed to clear ERROR 140.
ERROR 142
AIR FLOW SWITCH IS ON WITHOUT BLOWER ON: This error indicates that an
electrical signal is being received from the air flow switch with the blower off 10 minutes
after burner shutdown, effectively bypassing this important safety feature. Check the
adjustment of the Air Flow Switch (AFS) and verify its operation.
ERROR 144
EXCESSIVE FLAME FAILURES: While the burner is operating, it counts the number of
times the flame fails (either igniting or while running). When the total comes to 3, it
shuts the burner down on ERROR 144. If either of the ALARM codes 146 or 151 are
shown for this, it means that the first failure is the one displayed (i.e.: "Flam Not
Established" might mean the spark plug needs to be cleaned). Press SELECT as required
to clear all ALARMS and this ERROR.
ALARM 146
BURNER FAILED TO IGNITE: This ALARM means that the burner failed to light. It is
an indication that there may be air in the gas line, insufficient low fire gas, or turbulent
air flow. If the burner is being operated above a push fan, air turbulence can prevent the
burner from lighting. Verify that the shutters installed between the fan and burner head
are not closed down too far. Gas pressure may be increased to provide more low fire gas
to the burner heads if required. See the following maintenance tips.
ALARM 151
BURNER FAILED IN OPERATION: This ALARM means that the burner failed while
burning. See the following maintenance tips.