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Have recently had a CM-zone system installed (HR80s on the rads CM67z controllers)
However when turning new zones on the boiler very often locks out with an A02 error. When starting up from cold we haven't had a problem, only when starting a new zone with another zone already running.
Anyone know any reasons why this may be?
TIA
However when turning new zones on the boiler very often locks out with an A02 error. When starting up from cold we haven't had a problem, only when starting a new zone with another zone already running.
Anyone know any reasons why this may be?
TIA