York YCWL0056SE Installation Operation & Maintenance page 167

FORM 201.26-NM1
ISSUE DATE: 1/19/2018
TABLE 26 - TROUBLESHOOTING (CONT'D)
PROBLEM
LACK OF COOLING EFFECT
JOHNSON CONTROLS
CAUSE
1. Fouled evaporator surface Low suc-
tion pressure will be observed.
2. Improper flow through the evaporator.
3. Low refrigerant charge. Low suction
pressure will be observed.
SECTION 9 – SERVICE AND TROUBLESHOOTING
SOLUTION
1. Contact the local Johnson Con-
trols Service representative.
2. Reduce flow to within chiller
design specs. See Limitations in
SECTION 4 - INSTALLATION.
3. Check subcooling and add
charge as needed.
9
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