PAGE 27 of 84 HU-SOUTHWEST-1480 GAS-FIRED HUMIDAIRE UNIT
© SAMUEL JACKSON, INCORPORATED 2005 ALL RIGHTS RESERVED
If the operator is aware of the safety issues involved in bypassing the function of this
switch, a temporary software bypass is available by pressing the BYPASS button on the
error screen.
ERROR 131
USER SPECIFIED TIME FOR SHUTDOWN:
Some countries require that gas-fired
combustion products turn off once every 24 hours as a safety measure. To accommodate
operators that need to comply with this regulation, this error will force the Humidaire to
shut down once a day at a user defined time. This error will only occur if it is enabled.
ERROR 132
EXCESSIVE LOW AIR TEMPERATURE:
Actual air temperature was more than 10
degrees (F) lower than the target (setpoint) temperature for more than 15 minutes.
•
Is the burner shim too small?
•
Is the air volume too large?
•
Is the gas pressure too low?
•
Is the Gas Valve Motor (GVM) working and the linkage to the valve tight?
•
Is the screen on the inlet to the Safety Shut-Off Valve (SSOV) clogged?
ERROR 133
EXCESSIVE HIGH AIR TEMPERATURE:
Actual air temperature was more than 10
degrees (F) higher than the target (setpoint) temperature for more than 15 minutes.
•
Is the pilot valve (PV) opened too much?
•
Is the burner shim too big?
•
Is the air volume too small?
•
Is the minimum Gas Valve Motor (GVM) setting too high? (See “Additional
Settings” section of manual for more information on the PV ALWAYS OPEN
and PV OPEN TO LIGHT ONLY settings).
•
Is the Gas Valve Motor (GVM) working and the linkage to the valve tight?
ERROR 134
SSOV1 FAILED:
The PLC was not able to verify that Safety Shut-Off Valve 1 (upstream
SSOV valve) is opening and closing in a timely manner. If this problem persists, try the
following: Check that SSOV opens and closes. Check for gas leaks. Check operation of
SSOV's proof of closure switch. Replace SSOV valve actuator and/or its proof of closure
switch.
