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Troubleshooting by Error Codes
SiUS281811EA
276
Part 6 Service Diagnosis
Reference
Reference
Troubleshooting
CHECK 11
Refer to page 301.
CHECK 12
Refer to page 304.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
CHECK 12
CHECK 11
Is it cooling?
Is the low
pressure less or equal to 0.25 MPa
(36.3 psi)?
Is the
temperature
difference between the suction
pipe and the outdoor heat
exchanger greater than
20°C (68°F)?
Is the resistance
measured from suction pipe
thermistor disconnected from the
outdoor unit PCB
normal?
Is the voltage between
X18A pins (2) and (3) of outdoor
main PCB (A1P) less or equal to 1.0
VDC? (Low pressure sensor
output voltage)
Is the low pressure
sensor normal?
Short of refrigerant, closed stop
valve, or blocked cooling
system. Check the refrigerant
system.
Replace the outdoor main
PCB (A1P).
Replace the low pressure
sensor (S1NPL).
Replace the outdoor main
PCB (A1P).
Short of refrigerant or blocked
cooling system. Check the
refrigerant system.
Replace the suction pipe
thermistor.
Replace the low pressure
sensor (S1NPL).
Summary of Contents for SkyAir RZR-TA Series
Page 1: ...Service Manual Cooling Only 60 Hz Heat Pump 60 Hz RZR TA RZQ TA Series SiUS281811EA...
Page 202: ...SiUS281811EA 196 Part 6 Service Diagnosis 5 15 Fan Motor Connector Check for FTQ TA 311...
Page 323: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 317 RZR18 24TAVJUA RZQ18 24TAVJUA 3D124495...
Page 327: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 321 FHQ18 24 30PVJU FHQ36 42MVJU 3D048116C...
Page 328: ...Wiring Diagrams SiUS281811EA 322 Part 7 Appendix FAQ18 24TAVJU 3D114844B...
Page 329: ...SiUS281811EA Wiring Diagrams Part 7 Appendix 323 FBQ18 24 30 36 42 48PVJU 3D065984J...