York YK-EP B Operation & Maintenance Manual page 182

SECTION 3 - DISPLAY MESSAGES
VSD – High Phase C Inverter Heatsink
Temperature
(Style D VSD)
See PHASE A message above.
VSD – High Converter Heatsink Temperature
(Style D VSD)
See PHASE A message above.
VSD – High Converter Heatsink Temperature
(Applicable to VSD with Part Number 371-02767-
XXX (60 Hz) and 371-03700-XXX (50 Hz))
This shutdown will occur if the heatsink temperature
exceeds 170°F. The chiller can be started after the fault
condition clears and the Compressor Switch is placed
in the Stop-Reset (O) position.
VSD – High Inverter Baseplate Temperature
(Applicable to VSD with Part Number 371-02767-
XXX (60 Hz) and 371-03700-XXX (50 Hz))
This shutdown will occur if the baseplate temperature
exceeds 175°F. The chiller can be started after the fault
condition clears, the RESET button on the VSD Logic
Board is pressed and the Operator presses the WARN-
ING RESET button.
VSD – High Phase A Inverter Baseplate
Temperature
(VSD part number 371-03789-xxx (503HP 60 Hz;
419HP 50 Hz)
The chiller has shutdown because the baseplate tem-
perature has increased to greater than 158°F. The chiller
can be started after the fault condition clears, the RESET
button on the VSD Logic Board and Operator presses
the WARNING RESET button.
VSD – High Phase B Inverter Baseplate
Temperature
(VSD part number 371-03789-xxx (503HP 60 Hz;
419HP 50 Hz)
The chiller has shutdown because the baseplate tem-
perature has increased to greater than 158°F. The chiller
can be started after the fault condition clears, the RE-
SET button on the VSD Logic Board and the Operator
presses the WARNING RESET button.
182
VSD – High Phase C Inverter Baseplate
Temperature
(VSD part number 371-03789-xxx (503HP 60 Hz;
419HP 50 Hz)
The chiller has shutdown because the baseplate tem-
perature has increased to greater than 158°F. The chiller
can be started after the fault condition clears, the RE-
SET button on the VSD Logic Board and the Operator
presses the WARNING RESET button.
VSD – Precharge Lockout
If the VSD fails to make pre-charge, the relay will
drop out for ten seconds while the VSD fans and water
pumps remain energized and the pre-charge resistors
cool down. After this, the VSD will attempt to initiate
pre-charge again.
If the VSD fails to make pre-charge after 3 consecutive
attempts, the unit will shut down, lockout, and display
this message: The chiller can be started after the Op-
erator presses the WARNING RESET button.
Harmonic Filter – High Heatsink Temperature
(Style D VSD)
The Harmonic Filter power assembly has one heatsink
transmitter on the 503 HP units, and two heatsink trans-
mitter on the 790 HP units. If the temperature on any
heatsink exceeds 167°F, the unit will shut down. This
message is usually an indication of a low coolant level
in the VSD cooling loop. The chiller can be started af-
ter the fault condition clears, the OVERTEMP RESET
button on the Filter Logic Board is pressed and the Op-
erator presses the WARNING RESET button.
Harmonic Filter – High Baseplate Temperature
(Applicable to VSD with part number 371-02767-
XXX (60 Hz) and 371-03700-XXX (50 Hz))
This shutdown occurs when the baseplate temperature
exceeds 174°F (79°C). The chiller can be started af-
ter the fault condition clears, the OVERTEMP RESET
button on the Filter Logic Board is pressed and the Op-
erator presses the WARNING RESET button.
FORM 160.87-OM1
ISSUE DATE: 8/24/2018
JOHNSON CONTROLS