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35
EnglishEnglish
c
oolIng
a
nalySIS
c
hart
PoSSiBle cAUSe
X in AnAlYSiS GUide indicAte
“PoSSiBle cAUSe”
Comp discharge temp > 200F
Comp discharge temp < 105F
Comp discharge SH > 70F
Comp discharge SH < 20F
High pressure > 490psi
High pressure < 255psi
LSV SC > 12F
LSV SC < 4F
OD SSV SH > 20F
OD SSV SH < 4F
Lo
w pressure > 185psi
Lo
w pressure < 100psi
Requested % demand < Actual
Requested % demand > Actual
Repeated stop/star
t
W
eak cooling
No s
witch cooling
Noise
Stop oper
ation
Liquid stop valve does not fully open
X
X
X
X
X
X
X X X
X
Suction stop valve does not fully open
X
X
X
X X X
Line set restriction
X
X
X
X
X
X
X X X
X
Line set length is too long
X
X
X X
X
Blocked filter-dryer
X
X
X
X
X
X
X X X
X
ID EEV coil failure
X X X X X X X X X X X X X X X X
X
ID EEV failure
X X X X X X X X X X X X X X X X
High Pressure switch failure
X
Pressure sensor failure
X
X X
X X X
X
Suction temp sensor failure
X X
X
Discharge temp sensor failure
X X X X
X X X X
X
Coil temp sensor failure
X X X
X X X X
X
Liquid temp sensor failure
Ambient temp sensor failure
X X X
X X X X
OD recirculation
X
X
X
X X X
X
ID recirculation
X
X
X
X X X X X
Dirty OD Heat-exchanger
X
X
X
X X X
X
Dirty ID Heat-exchanger
X
X
X
X
X X X X X
Outdoor Ambient temp is too high
X
X
X
X
X X X
X
Outdoor Ambient temp is too low
X
X
X X
X X X X X
ID suction temp is too high
X
X
ID suction temp is too low
X
X
X
X
X X X X X
Mixture of non-condensible gas
X
X
X
X X
X
X X X
X
OD fan motor failure
X
X
X
X
X X X
X X
Over charge
X X X X X
X
X
X
X
X
Under charge
X X X
X
X X
X
X
X
Leak
X X X
X
X X
X
X X X
X
OD Control Board Failure
X
ID Failure
X X X X X X X X X X X X X X X X X
X
Compressor failure
X X X
X
X
X X X
X X
Compressor and Gas furnace are operating at the same time
X
Cooling loop is not attached
X X X
Cooling loop grease is not enough
X X X
Low ID CFM
X
X
X
X X X X X
X
Outdoor Normal Temperature Operating Range: 67-115°F / Indoor Normal Temperature Operating Range: 65 - 85°F