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Troubleshooting
LED Status Accessory Module
Status Probable Cause
Green LED on continuously. Power on (no fault). n/a
Red One flash and three
second pause.
Leak alarm fault.
Inlet Shut-off valve
open.
Water heater tank leak.
Red Two flashes and three
second pause.
Leak alarm fault.
Inlet Shut-off valve
closed.
Water heater tank leak.
Amber Four flashes and three
second pause.
Leak sensor
malfunction.
1. Leak Sensor resistor
removed.
2. Leak Sensor improperly
connected to Accessory
Module.
Amber Five flashes and three
second pause.
Gas control
missing / not
connected.
1. Wrong gas control wire
harness was used.
2. Accessory Module was
not connected to gas
valve.
Red LED strobe (quick
flashes). Hardware error. Internal electronics failure,
replace Accessory Module.
The table, below, details the diagnostic codes that can be seen on the Accessory Module. Reference the Accessory Module manual, p/n 238-47878-00, for moredetails on this control. 16