S9200U Installation Guide

S9200U1000 UNIVERSAL HOT SURFACE IGNITION INTEGRATED FURNACE CONTROL
17 69-2075EF—05
Self Check Lockout
Self Check Lockout is intended to prevent initiation of
a new heating cycle after the self check mechanism
has detected a hardware fault. The S9200U1000
functionality during a Self Check Lockout is defined as
follows:
— Thermostat heat requests are ignored.
— Thermostat cool requests are served as normal.
— Fan requests are served as normal.
— The S9200U1000 flashes a fault code identify-
ing the fault that caused transition to the Self
Check Lockout. See Table 12 on page 21.
— An EnviraCOM™ alarm indicating the fault is
active and sent on the bus. See Table 14 on
page 23.
— The S9200U1000 remains in this state until
the fault disappears.
For the S9200U1000 to return back to normal
operation, no fault must be present for the Self Check
Lockout Return Delay, which is five minutes.
Operating Sequences
Fig. 9–11 beginning on page 18 describe the
operations of the S9200U1000 control.