2A1
5B4
2A2
5B5
5B8
5B9
FD
8E
RLC-SVU01B-E4
38
Diagnostics
Reset
Level
Hex
Code
Persistence
Severity
Diagnostic Name and
Source
Criteria
Latch
The MP has received a fault
signal from the respective
condenser fan Variable Speed
Inverter Drive, and
unsuccessfully attempted
(5 times within 1 minute of
each other) to clear the fault.
The 4th attempt removes
power from the inverter to
create a power up reset. If the
fault does not clear, the MP will
revert to constant speed
operation without the use of
the inverter's fan. The inverter
must be manually bypassed,
and fan outputs rebound, for
full fixed speed fan operation
Special
Mode
Remote
Condenser Fan
Variable Speed Drive
Fault - Circuit 1
(Drive 1)
Latch
Same as Condenser Fan
Variable Speed Drive Fault -
Circuit 1 (Drive 1)
Special
Mode
Remote
Condenser Fan
Variable Speed Drive
Fault - Circuit 1
Drive 2
Latch
Same as Condenser Fan
Variable Speed Drive Fault -
Circuit 1 (Drive 1)
Special
Mode
Remote
Condenser Fan
Variable Speed Drive
Fault - Circuit 2
Drive 1
Latch
Same as Condenser Fan
Variable Speed Drive Fault -
Circuit 1 (Drive 1)
Special
Mode
Remote
Condenser Fan
Variable Speed Drive
Fault - Circuit 2
Drive 2
Latch
Bad Sensor or LLID
Immediate
Remote
Condenser
Refrigerant Pressure
Transducer - Circuit 1
Latch
Bad Sensor or LLID
Immediate
Remote
Condenser
Refrigerant Pressure
Transducer - Circuit 2
Latch
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.
Immediate
Remote
Emergency Stop
Latch
Bad Sensor or LLID a. Normal
operation, no effects on
control. b. Chiller shall remove
any Return or Constant Return
Chilled Water Reset, if it was in
effect. Apply slew rates per
Chilled Water Reset spec
Immediate
Remote
Evaporator Entering
Water Temperature
Sensor