Installation / Operation Instruction Manual

Table Of Contents
Page 93
SERVICE
8.E.2 Digital I/O ( Input / Output )
There are two screen associated with the Digital I/O: Digital I/O Screen-Inputs; Digital I/O Screen-Outputs.
Navigate to the Digital I/O Screen by touching the Digital I/O Button on the Service Screen.
Digital I/O Inputs: The indicator light associated with the input is green when the input is satised. For example,
if there is adequate ow, the ow switch is satised, and the ow switch digital input indicator light is green. The
indicator light associated with the input is red, when the input is not satised. For example, if the blower is o󰀨, the air
proving switch is not satised and the air proving switch digital input indicator light is red.
Digital I/O Outputs: The
output is on, the indicator light associated with that output is green. For example, if the boiler
pump is running, the boiler pump output indicator light is green. If the output is o󰀨, the indicator light associated with
that output is red. For example, if there is no call for heat, the gas valves are o󰀨, and the gas valve indicator lights are
red.
Inputs
Outputs