York YHAU-CE-JE Series, Установка, эксплуатация и обслуживание, Страница: 79 / 136

JOHNSON CONTROLS
79
SECTION 6 – OPERATION
FORM 155.33-ICOM2.EN.GB
ISSUE DATE:12/4/2017
6
The failures addressed in this screen are listed in the
following table.
TABLE 15 - FAILURE LIST
BUTTON LABEL
(FAILURE NAME)
OPERATION
AT FAILURE
OCCURRENCE
CAUSE COUNTERMEASURES
Operation interlock
Stop after dilution
Operation interlock (chilled / hot water
pump, etc.) signal was not established
during solution pump operation.
Check interlocked equipment for
operation interlock.
Cooling water pump
interlock
Cooling water pump interlock was not
established during the cooling water
pump operation command output
Check cooling water pump interlock
signal.
Constantly Monitoring
interlock
Constantly monitoring (external)
interlock (seismoscope, high room
temperature signal, etc.) was not
established
Check interlocked equipment for
constantly monitoring (external)
interlock.
Emergency Failure
Interlock
Stop without
dilution
Emergency failure interlock signal was
not established. Check interlocked equipment for
emergency failure interlock.
Chilled / hot water
suspension Chilled / hot water flow stopped during
solution pump operation
• Check the chilled / hot water pumps.
• Check the chilled / hot water lines.
• Check the chilled / hot water flow
rate.
• Check the chilled / hot water
suspension relay.
• Check to see if the connection pipe is
clogged.
Chilled W Ovcool /
HW Hi Temp (Chilled
water overcooled) Chilled water outlet temperature fell
too far or too quickly during the cooling
operation. • Check the equipment in the cooling
load line.
• Check the chilled / hot water flow
rate.
• Check the chilled / hot water flow rate
control system.
• Contact your local Johnson Controls
Service Center.
Chilled W Ovcool
/ HW Hi Temp
(Hot water high
temperature)
Hot water outlet temperature rose too
far or too quickly during the heating
operation.
Refrigerant
overcooled Refrigerant temperature dropped too
far or too quickly.
• Check the chilled / hot water lines.
• Check the chilled / hot water flow
rate.
• Contact your local Johnson Controls
Service Center.
Low Cooling Water
Inlet Temp. (Low
cooling water inlet
temperature (Failure))
Stop after dilution
Cooling water inlet temperature
has been lower than its lower limit
temperature continuously for 30 minute
during the cooling operation.
Check the cooling water inlet
temperature control system.