Installation and Maintenance Manual

Diagnostics
86 RTAE-SVX001B-EN
Comm Loss:
Emergency 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: Evap
Rfgt Pool Temp,
Ckt1
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 Note: The
Evap Pool Temp Sensors are used for both On and Off -cycle
freeze protection. Substitute Suction Pressure to
Temperature conversion for freeze protection functions.
Remote
Comm Loss: Evap
Rfgt Pool Temp,
Ckt2
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 Note: The
Evap Pool Temp Sensors are used for both On and Off -cycle
freeze protection. Substitute Suction Pressure to
Temperature conversion for freeze protection functions.
Remote
Comm Loss:
Evaporator Entering
Water Temperature
Chiller Normal Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. Note:
Entering Water Temp Sensor is used in EXV pressure control
as well as ice making & CHW reset, so it must cause a unit
shutdown even if Ice or CHW reset is not installed.
Remote
Comm Loss:
Evaporator Leaving
Water Temperature
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 Rfgt
Liquid Level, Ckt1
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 Rfgt
Liquid Level, Ckt2
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
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 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:
Expansion Valve,
Ckt1
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:
Expansion Valve,
Ckt2
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: Ext
Noise Reduction
Command
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
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/Hot
Water Setpoint
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, Ckt1
None Info Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. MP will
hold the last lockout state (enabled or disabled) that was in
effect at the time of comm loss.
Remote
Comm Loss:
External Ckt
Lockout, Ckt2
None Info Latch All
Continual loss of communication between the MP and the
Functional ID has occurred for a 30 second period. MP will
hold the last lockout state (enabled or disabled) that was in
effect at the time of comm loss
Remote
Comm Loss:
External Demand
Limit Setpoint
External
Current
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 Current limit setpoint
and revert to the next higher priority for Current Limit
setpoint arbitration
Remote
Table 34. Communication diagnostics (continued)
Diagnostic
Name
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level