Installation and Maintenance Manual

Diagnostics
198 RLC-SVX09H-EN
BAS Failed to Establish
Communication
None Special Action Non Latch At power-up
The BAS was setup as "installed" and the BAS
did not communicate with the Lontalk LCIC
within 15 minutes after chiller controls power-
up. Refer to Section on Setpoint Arbitration to
determine how setpoints and operating modes
may be effected. Note that this diagnostic is
never operational for BacNet Communication
interface (BCIC) and only operational with a
LonTalk Communication interface (LCIC) if so
configured by the BAS or Tracer system.
Remote
Check Clock Chiller Info Latch All
The real time clock had detected loss of its
oscillator at some time in the past. Check/
replace battery? This diagnostic can be
effectively cleared only by writing a new value
to the chiller’s time clock using the TechView or
DynaView’s “set chiller time” functions.
Remote
Condenser Entering
Water Temperature
Sensor
Chiller
Info and
Special Action
Latch All
RTWD only: Bad Sensor or LLID. If chiller
running, and condenser water regulating valve
option installed, force valve to 100% flow.
Remote
Condenser Leaving
Water Temperature
Sensor
Chiller
Info or Special
Action
Latch All
RTWD only: Bad Sensor or LLID. If Chiller is
running in the heat mode of operation – normal
chiller shutdown, otherwise, informational
warning only. Discontinue Min Capacity Limit
forced cprsr loading due to Low DP in
subsequent startups.
Remote
Condenser Refrigerant
Pressure Transducer -
Circuit 1
Circuit Immediate Latch All Bad Sensor or LLID Remote
Condenser Refrigerant
Pressure Transducer -
Circuit 2
Circuit Immediate Latch All Bad Sensor or LLID Remote
Condenser Water Flow
Lost
Chiller Immediate Non Latch
Start and All Run
Modes
The condenser water flow proof input was open
for more than 6 contiguous seconds (or 15
seconds for thermal dispersion type flow
switch) after flow had been proven. This
diagnostic is automatically cleared once the
compressor is stopped by a fixed time out of 7
sec. In Cooling Mode: The Cond Pump shall be
commanded off but the Evap pump command
will not be effected. – once the diagnostic auto
clears, if diff to start is met, the cond pump can
be restarted. In Heating Mode: The Cond Pump
shall remain on, and the Evap pump shall shut
off – once diagnostic auto clears, if diff to start
is met, the chiller may restart normally and the
evap pump can be restarted.
Remote
Condenser Water Flow
Overdue
Chiller Normal Non Latch
Estab Cond Water
Flow
Condenser water flow was not proven within 20
minutes of the condenser pump relay being
energized. The Cond Pump shall be
commanded off. Diagnostic is reset with return
of flow (although only possible with external
control of pump)
Remote
Discharge Temperature
Sensor – Compressor
1A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Discharge Temperature
Sensor – Compressor
2A
Circuit Immediate Latch All Bad Sensor or LLID Remote
Emergency Stop Chiller Immediate Latch All
a. EMERGENCY STOP input is open. An external
interlock has tripped. Time to trip from input
opening to unit stop shall be 0.1 to 1.0 seconds.
Local
Table 134. Main Processor Diagnostics (continued)
Diagnostic Name
Affects
Target Severity Persistence
Active Modes
[Inactive
Modes] Criteria
Reset
Level