Daikin DZ17VSA481AA - Cooling Analysis Chart

2424
coolIng analySIS chart
POSSIBLE CAUSE
X IN ANALYSIS GUIDE INDICATE
“POSSIBLE CAUSE”
Comp discharge temp > 200F Comp discharge temp < 105F Comp discharge SH > 72F Comp discharge SH < 20F High pressure > 500psi High pressure < 255psi LSV SC > 15F LSV SC < 4F OD SSV SH > 20F OD SSV SH < 4F Low pressure > 185psi Low pressure < 100psi Requested % demand < Actual Requested % demand > Actual Repeated stop/start Weak cooling No switch cooling Noise Stop operation
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 lter-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 for Cooling Analysis: 67-115°F / Indoor Normal Temperature Operating Range: 65 - 85°F