Diagnostics
RTAF-SVX001A-EN 81
Comm Loss: Evaporator
Leaving Water
Temperature
Comm Loss: Evap Leaving
Water Temp
Comm: Evap Leav Water
Temp
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
Pump 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
Pump 2 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
Pump Inverter 1 Run
Command
Comm Loss: Evap Pump
Inv 1 Run Command
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
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
Table 28. Communications diagnostics (continued)
Diagnostic Name
Affects
Target Severity Persistence
Active
Modes
[Inactive
Modes] Criteria
Reset
Level
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