PAGE 21of 46 HG-1-1701 GAS-FIRED HEATER
LAST UPDATED: JAN-25-2022 © SAMUEL JACKSON, INCORPORATED 2011 ALL RIGHTS RESERVED
ERROR & ALARM EXPLANATIONS
PRELIMINARIES
-- As explained in the
Heater Operation
section, ERRORS will
cause the burner to automatically shut down. ALARMS will permit the burner to
continue operation but warn of conditions which may cause a shutdown if left
unattended. In each case, the DIAGNOSTIC CODE with a brief description of the
ERROR or ALARM will be shown on the touch screen in the heater cabinet or the
Moisture Mirror if it is a 3X or 4X.
ERROR & ALARM Condition Display
3567
EXAMPLE:
The flame electrode is fouled. This prevents the burner from having a
flame signal. ALARM code 146 (Flame Not Established) is displayed and the status light
flashes. While this is occurring, the burner is automatically restarting itself (three times
maximum) attempting to light. The burner shuts itself down on ERROR code 144
(Excessive Flame Failures) after 3 unsuccessful tries. The display continues to show
ALARM code 146.
Note:
Errors that have an * in front of them can be temporarily bypassed. See the bypass
routine explanation at the end of this section for more details.
Alarm 422
LOW FIRE SWITCH STAYS ON
: Did the fuel mod motor fail to open?
Alarm 423
LOW FIRE SWITCH NEVER ON
: Did the fuel mod motor fail to close?
ALARM 432
MOMENTARY LOW AIR FLOW:
This ERROR is an indication that a choke of the air
flow is occurring. It is displayed when the Air Flow Transducer (AFT) detects low air
flow for less than 3 seconds. If air flow is ok, the low air flow limit may be set too high.
See “AIR Flow” in the “Setup - Home” section of manual for adjustment.
ERROR 433
LOW AIR FLOW:
This ERROR occurs when the air flow is interrupted for more than 3
seconds. Verify proper air flow and adjust alarm threshold of Air Flow Transducer (AFT)
setting if necessary. See “AIR Flow” in the “Setup Home” section of manual for
adjustment of the “alarm” threshold.
ERROR 435
UPSTREAM GAS LEAK DETECTED – CHECK SSOV1 FOR LEAKS:
This is a serious
ERROR caused by a leak in the SSOV1 (this is the "upstream" gas valve). In the “System
Tests” section, select “Run New Leak Test” to access control of the fuel valves to
determine the severity of the leak. This ERROR is normally a result of contamination
under the valve seat of SSOV1. If severe contact the factory for service.
ALARM 438
FAN INTERLOCK BYPASSED:
Samuel Jackson burner controls are provided with a fan
interlock relay (FIR) to provide immediate shutdown of the burner when the air fan is
turned off. This ERROR indicates that an electrical signal is being received through the
fan interlock with no airflow present, effectively bypassing this important safety feature.
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