Trane Technologies IntelliPak Signature SCWF Installation, Operation And Maintenance Manual page 103

Category Diagnostic
Reset
An automatic reset occurs after one complete set of IPC packets is received.
Required
WSM Mixed Air Temp Sensor Fail
Activation Temperature <-50°F or temperature >209°F, and sensor is selected for use by "waterside economizer temperature enable function" or "preheat
Conditions function"
Time to React 10 sec < T < 20 sec
"Waterside economizer temperature enable function" uses supply air cooling setpoint instead of mixed air temperature. If mixed air temperature
Actions to be
is used for "preheat function", issue a "disable" request to "preheat function".
Initiated
An automatic reset occurs after mixed air temp. input returns to within range continuously for 10 seconds.
Reset
Water Flow Fail
Data used
(module,
WSM, 01,19, 05
packet, byte,
bit)
Water flow input is detected open:
• At the end of pre-cool water flow initiation state, or
• Continuously for five minutes while:
Activation
Conditions
– Water side economizer is open 100%,
– Presetting of a head pressure valve, or
– Demand for mechanical cooling.
Configured with water cooled condenser and/or water economizer and have water flow switch installed.
Unit must be
Time to React Immediate
Actions to be
A "lockout all ckts" request is issued to the "compressor staging function"
Initiated
Automatic reset occurs after water flow input returns to within range continuously for 3 seconds, water pump is requested OFF, or water flow
Reset
switch becomes not installed.
Z
Zone Cool Setpoint Failure
Occupied zone cooling setpoint is out of range.
Problem
Reason for
Input designated as occupied zone cooling setpoint source is out of range (temp. < 45°F or > 94°F).
Diagnostic
Controls
The active occupied zone cooling setpoint reverts to the default occupied zone cooling setpoint.
Reaction
Reset (PAR) an automatic reset occurs after designated occupied zone CSP input returns to its allowable range for 10 continuous seconds, or after a
Required different valid occupied zone CSP selection source is user-defined.
SCXF-SVX01T-EN
Diagnostics
103