Vokera Pinnacle Combi fault codes

19 codes from the Vokera manual for the Pinnacle Combi gas boiler. Pick one for what it means, the likely causes and where to start.

Code	What it means
COM	Appliance PCB communication lost
E010	Maximum number of ignition attempts
E011	Parasitic flame
E041	Low water pressure (temporary fault)
E042	Water transducer - LWCO error
E050	Smoke obstruction error low power
E051	Smoke obstruction error high power
E055	No card fan communication
E056	No communication microprocessor card
E070	CH probe error
E071	Heating temperature over limit
E072	Delta T return out of limit
E077	Absence of communication with low temperature thermostat
E080	Return probe error
E082	Warning delta temperature
E091	Primary heat-exchanger cleaning fault
E095	Calibration failed
E096	Lambda over limit
E099	Reset attempts exhausted