56
Appliance Shutdown in Fault Conditions
The Fire Protection System is equipped to shut down the appliances if a fault condition is present.
shows which fault condition affects the appliances’ fuel and power sources, alarm muting, and local
trouble relay.
Local Alarm Muting
Depressing the fire system reset button can mute the local alarm. This will disable the sounder for 4 hours
shows which errors can be muted. It should be noted that the fault will
not clear until the fault condition is corrected.
Test Mode
Test Mode allows the hood to be tested with operational appliances without discharging the system on the
appliances. Once the appliances are started, test mode can be entered without the appliances shutting
down for 15 minutes. However, once the fire system is activated, the shunt trip (electric appliances) and
the gas valve will be locked out until test mode is deactivated.
**During AC power failure, all gas appliances will be shut down. Electrical appliances will shut down on
building power loss.
Table 20 - Appliance Fault Conditions
Number
of
Flashes
Fault Condition
Gas Valve Shut Down
Shut Down Shunt Trip
Breaker and UDS Kill
Switch
Mute
Local
Alarm 4
Hour
Reset
Local
Trouble
Relay
Local
System
Networked
System
Local
System
Networked
System
Catastrophic Faults
2
Release Solenoid
X
X
X
X
X
3
Pressure Switch
X
X
X
X
X
4
Auxiliary Fault
X
X
X
X
X
5
Micro-controller
Fault
X
X
X
X
Critical Faults
7
Supervised Loop
Fault
X
X
X
X
X
Important Faults
8
Ground Fault
X
10
Battery Voltage
Low
X
X
11
AC Power Failure
X
X
X**
X**
X
12
Door Tamper
Switch
X
13
Test Mode
X
X
X
X
14
CORE Interlock
X
15
Fault on Hood In
Network
X
16
Fault on PCU in
Network
X
Summary of Contents for EWC
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