140
YORK INTERNATIONAL
PROBLEM
CAUSE
SOLUTION
“LOW SUCTION PRESSURE”
1. Improper suction pressure
1. Adjust per recommended
FAULT
cut-out adjustments.
settings.
2. Low refrigerant charge.
2. Repair leak if necessary
and add refrigerant.
3. Fouled filter dryer.
3. Change dryer core.
4. EEV defective
4. Replace EEV.
5. Reduced flow of chilled
5. Check GPM (See
liquid through the cooler.
OPERATION
LIMITATIONS)
Check operation of pump,
clean pump strainer, purge
chilled liquid system of air.
6. Defective suction pressure
6. Replace transducer or
transducer or faulty wiring.
repair wiring.
“HIGH DISCHARGE
1. Condenser fans not
1. Check fan motor, fuses,
PRESSURE” FAULT
operating or operating
and contactors.
backwards.
Assure forward fan blow
NOTE: If a mechanical high
air upward.
pressure cut-out opens,
the system will shut down
2. Too much refrigerant.
2. Remove refrigerant.
on low motor current.
3. Air in refrigerant system.
3. Evacuate and recharge
system.
4. Defective discharge
4. Replace discharge
pressure transducer.
pressure transducer.
5. Assure outdoor ambient
5. Verify displayed ambient
sensor is reading correctly.
temperature is within
+ or - 15°F of
thermometer placed
next to sensor.
Summary of Contents for Millennium YCAS 216X
Page 11: ...FORM 201 10 NM1 11 YORK INTERNATIONAL YCAS 140 246 DIMENSIONS English LD01444 LD01446...
Page 13: ...FORM 201 10 NM1 13 YORK INTERNATIONAL YCAS 140 246 DIMENSIONS SI LD01440 LD01442...
Page 15: ...FORM 201 10 NM1 15 YORK INTERNATIONAL YCAS 216X 266X DIMENSIONS English LD01454 LD01454...
Page 17: ...FORM 201 10 NM1 17 YORK INTERNATIONAL YCAS 216X 266X DIMENSIONS SI LD01450 LD01448...
Page 33: ...FORM 201 10 NM1 33 YORK INTERNATIONAL 28514A FILTER DRYER LIQUID STOP VALVE...
Page 37: ...FORM 201 10 NM1 37 YORK INTERNATIONAL LD01285 FIG 3 SCREW CHILLER REFIGERANT FLOW DIAGRAM...
Page 59: ...FORM 201 10 NM1 59 YORK INTERNATIONAL FIG 11 CONTINUED LD01465 D...
Page 61: ...FORM 201 10 NM1 61 YORK INTERNATIONAL FIG 12 CONTINUED LD01458 D...
Page 69: ...FORM 201 10 NM1 69 YORK INTERNATIONAL FIG 16 CONTINUED LD01206 D...
Page 71: ...FORM 201 10 NM1 71 YORK INTERNATIONAL FIG 17 CONTINUED LD01202 D...
