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Copyright. Sygnal 2018
7.1 Digital Inverter System Self Diagnostics / Fault detection
Sygnal systems are able to detect a number of problems and display a fault message to aid in troubleshooting.
Fault D1 = 3 Phase error Digital Outdoor
Line 1 =
Fault D1:
Line 2 scrolls one of the following:
3 phase, L2 & L3 lost
3 Phase, L2 lost
3 Phase, L3 lost
3 Phase, rotate L2 & L3
Fault D2 – Coil Sensor Error (sensor nominated)
Line 1 =
Fault D2:
Line 2 scrolls one of the following:
Outdoor coil sensor open circuit
Outdoor coil sensor short circuit
Indoor coil sensor open circuit
Indoor coil sensor short circuit
Fault D3 – High Pressure or Low Pressure Fault
Line 2 scrolls one of the following:
HP compressor safety
LP compressor safety
HP/LP compressor safety
Fault D4 – Interconnect Indoor > Outdoor
Line 1 =
Fault 4:
Line 2 scrolls one of the following:
AHU and Condenser Interconnect
Fault D5 – Contact Manufacturer
Line 1 =
Fault 5:
Line 2 scrolls
Contact Manufacturer
Fault D6 – Contact Manufacturer
Line 1 =
Fault 6:
Line 2 scrolls
Contact Manufacturer
Fault D7 – Zoning to indoor Board Communications Lost
Line 1 =
Fault 7:
Line 2 scrolls
AHU and Zoning interconnect
Fault D8 – Contact manufacturer
Line 1 =
Contact Manufacturer
