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Copyright. Sygnal 2018
6.2 Dual Inverter System Diagnostics / Fault detection.
Sygnal systems are able to detect a number of problems and display a fault message to aid in troubleshooting.
If any fault messages are displayed contact your installer/service person.
Fault I1 – Indoor and Outdoor unit not compatible
Line1 =
Fault I1:
Line 2 scrolls one of the following:
AHU and Condenser not compatible
Fault I2 – Coil Sensor Error (sensor nominated)
Line 1 =
Fault I2:
Line 2 scrolls the following:
Outdoor coil sensor open circuit
Outdoor coil sensor short circuit
Indoor coil sensor open circuit
Indoor coil sensor short circuit
Fault I3 – Contact Manufacturer
Line 2 scrolls one of the following:
Contact Manufacturer
Fault I4 – Interconnect Indoor>Outdoor
Line 1 =
Fault 4:
Line 2 scrolls one of the following:
AHU and Condenser Interconnect
Fault I5 – Contact Manufacturer
Line 1 =
Fault 5:
Line 2 scrolls
Contact Manufacturer
Fault I6 – Contact Manufacturer
Line 1 =
Fault 6:
Line 2 scrolls
Contact Manufacturer
Fault I7 – Zoning to Indoor Board Communications Lost
Line 1 =
Fault I7:
Line 2 scrolls
AHU and Zoning interconnect
Fault I8 – Contact Manufacturer
Line 1 =
Contact Manufacturer
