Start Inhibit Messages; Warning Messages - York YK Style H Operation Manual

FORM 160.76-O2
issue date: 6/15/2015
Load Control Mode
Access Level Required: SERVICE
The Compressor Motor Variable Speed Drive has not
yet reached full speed after having been commanded to
do so in Manual Speed Control mode. While this is dis-
played, the Pre-rotation Vanes are inhibited from further
opening.

START INHIBIT MESSAGES

Anti-Recycle xx min/Sec
The chiller is inhibited from starting because the 30
minute anti-recycle time has not yet elapsed. Time re-
maining is displayed.
Vane Motor Switch Open
The chiller is inhibited from starting because the Pre-
rotation Vanes are not fully closed.
Motor – Current >15% FLA
This start inhibit is instantaneously set whenever the
chiller is not running and a motor current of greater
than 15% FLA is detected. The oil pump is started as
soon as this fault is detected. The starting frequency
for the Variable Speed Oil Pump is 45.0Hz. The start
inhibit is released when the motor current decreases to
less than 15% and the Warning Reset button is pressed
on the display. A full System Coastdown is performed
when this fault is released.
VSD – Frequency > 0Hz
This start inhibit is set whenever the chiller is shut-
down and a Compressor Motor Variable Speed Drive
(VSD) Output Frequency of greater than 0Hz is detect-
ed. This fault is released and the chiller can be start-
ed after the frequency is at 0Hz and the Compressor
Switch is placed in the Stop-Reset (O) position. The oil
pump is started (with a starting frequency of 45Hz) as
soon as this fault is detected. A System Coastdown is
performed whenever this fault is released.
LCSSS – High Temperature Phase x - Stopped
(Mod. "B" Solid State Starter only)
The chiller is stopped and the Liquid Cooled Solid
State Starter Logic/Trigger Board has detected that the
temperature of phase A, B, or C (designated as X in this
message) Silicon Controlled Rectifier (SCR) Module
is greater than 110°F. The starter cooling pump will run
and the chiller will be inhibited from starting until the
temperature decreases to less than 109°F.
JOHNSON CONTROLS
SECTION 3 - DISPLAY MESSAGES

WARNING MESSAGES

Warning – Condenser or Evaporator xDCR Error
The Evaporator Pressure transducer is indicating a
higher pressure than the Condenser pressure transducer
after the chiller has been running for 10 minutes. This
is indicative of a Condenser or Evaporator transducer
failure. This message will be displayed until the condi-
tion clears and the WARNING RESET Keypad key is
pressed in Operator (or higher) access mode. Condition
not checked in Brine mode.
Warning – Standby Lube – Low Oil Pressure
A minimum of 15 PSID of oil pressure was not achieved
in the first 30 seconds of a Standby Lubrication cycle,
or the pressure decreased below this value during the
remainder of the cycle. This message will be displayed
and no further Standby Lubrications will be performed
until the WARNING RESET key is pressed in Opera-
tor (or higher) access mode.
This warning is also set when either the Pump Oil Pres-
sure transducer or the Sump Oil Pressure transducer
is less than 2 PSIG when a Standby Lube is requested
by automatic control. This inhibits the Standby Lube
cycle when the chiller is open to atmosphere.
Warning – Setpoint Override
A failure of the FeRAM memory device was detected
during the initialization process that occurs when power
is applied to the Control Center. Due to this failure, any
or all of the programmed Setpoints could have been cor-
rupted. Therefore, all Setpoints have been automatically
changed to their Default values. All Setpoints will have
to be programmed to their desired values. This message
will clear when the WARNING RESET key is pressed in
Operator (or higher) access mode.
Warning – Condenser – High Pressure Limit
The Condenser Pressure exceeds the High Pressure Warn-
ing Setpoint threshold, programmed by a Service Tech-
nician logged in at SERVICE access level. While this
condition is in effect, the Pre-rotation Vanes are inhibited
from further opening. This message automatically clears
and the Vanes are permitted to open when the condenser
pressure decreases to 5 PSIG below the Setpoint.
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