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E1/EL01 – Comms Error
Condition – Indoor and outdoor unit do not receive feedback from one another
Installation Checks (first time running)
Check that there is 240v onto both units (indoor and outdoor).
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Check wiring for continuity
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If using the 4 core wiring method make sure the W terminal has been moved to 1(L)
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Check the S connection from the terminal block at the outdoor unit is connected ok onto the outdoor PCB. Make sure to check
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all jack plugs
Check power connections from terminal blocks to both indoor and outdoor PCBs
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Make sure all other connections (controllers etc) are correct
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Service Checks (system has been commissioned)
Has there been any recent work done to the building? Any power cuts etc? Any mains supply works?
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Check both units have 240v and are powered correctly
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