Hurricane SCH25, Service And Troubleshooting Manual

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3. Troubleshooting
3.1. Overview
The electronic board consists of a flash micro controller programmed to
monitor the timing and safety function of the heater. Each time the
board is energized by a call for heat, it will check its own circuits for any
problems. Should a problem exist, the board will shut down.
You can easily monitor your HURRICANE
®
SCH25 heater’s operation by
checking the electronic control box. Any fault or problem will be
immediately picked up by the control board and an LED diagnostic code
indicator will light up to pinpoint the fault. Once the fault has been
corrected, it can be reset by switching the service or remote switch OFF,
then ON again. The diagnostic codes are described below.
3.2. Power On (Green)
The POWER ON indicator is lit whenever the service switch on the control
box is ON and if the remote panel is switched ON, a small red LED near
the lower right hand side of the digit on the remote panel will also glow.
If this light does not come on, check to see if the service switch is ON.
If the power on light does NOT come on:
• Check for a blown fuse.
3.3. Burner On
No diagnostic code will be displayed on the main board or the remote
panel when the burner is ON and operating normally. A small red LED
will glow near the lower right hand side of the digital on the remote
panel indicating it is ON.
3.4.
V
- Service Switch Off
The service switch is switched OFF.
• The burner will shut down if it has been running.
• The diagnostic code,
V
will be displayed.
• The control board will purge the system with the combustion fan and
circulating pump for two minutes. At the end of the purge period, the
system will power down and will go into a low power consumption
mode (10mA max.). There will not be any display or LEDs lit.
3.5.
9
- Remote Switch Off
The remote panel is switched OFF.
• The burner will shut down.