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

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PAGE 18 of 46 HG-1-1501 GAS-FIRED HEATER
© SAMUEL JACKSON, INCORPORATED 2011 ALL RIGHTS RESERVED
If the operator is aware of the safety issues involved in bypassing the function of the
Proof of Closure switch (POC), a temporary software bypass is available by pressing the
BYPASS button on the error screen.
ALERT 170
LOW PLC BATTERY: This ALERT means that the PLC battery needs to be replaced
soon. A dead PLC battery will prevent the display from working (except to display E042
NO CPU BATT) and the ERROR LOGGING SYSTEM will lose the log history. The
burner can continue to operate with a dead battery. ALERTS are not entered into the error
logging system.
ERROR 171
HIGH TEMPERATURE DOWNSTREAM: This ERROR will shut the burner down if the
heated air temperature is more than 50 degrees above the air temperature setpoint.
ALARM 172
FLAME CONTINUES TOO LONG AFTER SHUTDOWN: This ALARM means that
flame is detected for more than 12 seconds following closure of all gas valves. This
indicates a probable gas leak in the system. Run the TESTS program and perform the
Gas Low Pressure test to determine the severity of the leak. Consult the factory for
service recommendations. In rare cases, very low quality LPG fuel can cause this.
ERROR 174
CONSTANT AIR TEMPERATURE > 60 SECONDS: The heated air temperature is
constantly monitored. Very small fluctuations in temperature are expected and indicate
that the thermocouple wiring and thermocouple input card on the PLC are in working
order. Check for disconnected thermocouple, thermocouple wiring problem and
connections to the thermocouple input card on the PLC.
ERROR 177
POWER FAULT DURING OPERATION: This ERROR means that electrical power was
disconnected while the burner was on. Check for faulty supply wiring connections.
* Indicates an ERROR condition that can be temporarily bypassed.
These steps will have to be performed in order to bypass the ERROR each time the heater
is started until the condition is fixed. Some problems will require the bypass of multiple
errors before operation can occur.
Before the SELECT button is pressed to clear the ERROR, do the following:
- Use the START/STOP switch at the LOCAL PANEL in the heater. Turn it to
the left ( O ) 3 times.
- Press the SELECT button to clear the ERROR and attempt to restart the heater.