IO-100 Series Installation/Owners Manual

2100 / IO 100 Manual
IM110107
RD: NOV 2016
R.L. 8
33
Fault Conditions:
The LED will flash on for 1/4 second, then off for
1/4 second during a fault condition. The pause
between fault codes is 3 seconds.
TH Thermostat / 24V Supply Input
GND System Ground
V1 Valve Power
V2 24V Supply Neutral
NC Alarm
S1 Remote Flame Sensor
Fenwal Control Terminal Designation Error Mode LED Indication
Internal Control Failure Steady on
Flame with No Call for
heat
2 flashes
Ignition Lockout 3 flashes
18-A. WIRING DIAGRAM: 2100 / IO-100 Single-Stage: Fenwal 35-60 DSI
If installing remote control kit JP-1235-RK refer to wiring diagram in the remote control
manual