
Diagnostics
94
RTAF-SVX001K-EN
Comm Loss: Evaporator Refrigerant Pool
Temperature
Comm Loss: Evap Rfgt Pool Temp
Comm: Evap Rfgt Pool Temp
Circuit
and
Chiller
Special
Action
and Info
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period. Invalidate
evaporator pool temperature sensor
measurement if this diagnostic is active. If
evaporator isolation valves are installed,
revert to Evaporator Shell Refrigerant
Saturated Temperature for freeze
protection functions. If evaporator
isolation valves are not installed, revert to
Evaporator Saturated Temperature for
freeze protection functions.
Remote
Comm Loss: Evaporator Shell Refrigerant
Pressure
Comm Loss: Evap Shell Rfgt Pressure
Comm: Evap Shell Rfgt Press
Circuit
Normal
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: Evaporator Water Flow Switch
Comm: Evap Water Flow Sw
Chiller Immediate
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: Evaporator Water Pump 1
Relay
Comm: Evap Wtr Pump Relay x
Chiller
Normal
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: Evaporator Water Pump 2
Relay
Comm: Evap Water Pump Relay
Chiller
Normal
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: Evaporator Water Pump
Inverter 1 Fault Input
Comm Loss: Evap Pump Inv 1 Fault Input
Comm: Evap Pump Fault Input
Chiller
Normal
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: Evaporator Water Pump
Inverter Frequency Input
Comm Loss: Evap Water Pump Inv Freq
Input
Comm: Evap Watr Pmp Inv Freq
Chiller
Normal
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: Evaporator Water Pump
Inverter Speed
Comm Loss: Evap Water Pump Inverter
Speed
Comm: Evap Water Pump Speed
Chiller
Normal
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: Ext Noise Reduction Request
Comm: Ext Noise Reduct Input
None
Info
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: External Auto/Stop
Comm: External Auto/Stop
Chiller
Normal
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period.
Remote
Comm Loss: External Chilled Water
Setpoint
Comm Loss: Ext Chilled Water Setpoint
Comm: Ext Chilled Wtr Setpt
External
Chilled
Water
Setpoint
Special
Action
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period. Chiller shall
discontinue use of the External Chilled
Water Setpoint source and revert to the
next higher priority for setpoint arbitration
Remote
Comm Loss: External Ckt Lockout
Comm Loss: External Ckt Lockout
Comm: Ext Ckt Lockout
Circuit
Special
Action
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period. MP will nonvolatile
hold the lockout state (enabled or
disabled) that was in effect at the time of
comm loss.
Remote
Comm Loss: External Demand Limit
Setpoint
Comm Loss: Ext Demand Limit Setpoint
Comm: Ext Demand Lim Setpt
External
Demand
Limit
setpoint
Special
Action
Latch
All
Continual loss of communication between
the MP and the Functional ID has occurred
for a 30 second period. Chiller shall
discontinue use of the External Demand
limit setpoint and revert to the next higher
priority for Demand Limit setpoint
arbitration.
Remote
Table 34. Communications diagnostics (continued)
Diagnostic Name
Affects
Target
Severity Persistence
Active
Modes
[Inactive
Modes]
Criteria
Reset
Level