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We have a bosch 2400E tankless water heater. When we call for hot water the flame lights, powered exhaust fans starts and blows out flame. The unit does this 3-4 times and gets an EC code. after resetting unit. and call again for hot water unit fires but I block exhaust intake so no air get in ,the heater will light then I slowly let air flow into exhaust fan . Heater will stay lit and work, If we let unit sit overnight same thing will happen again in morning, flame blows out. does any one have any ideas of a problem/ cure.
Not to may plumbers in my area even have a clue how to repair.
any help would be nice.
Thanks
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Rank: Member
Groups: Registered
Joined: 1/27/2011(UTC)
Posts: 12
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Go to this web site - there is a wealth of information on the water heater http://www.boschhotwater.net/Po...code_troubleshooting.pdf Steve KJR Originally Posted by: kcrtm  We have a bosch 2400E tankless water heater. When we call for hot water the flame lights, powered exhaust fans starts and blows out flame. The unit does this 3-4 times and gets an EC code. after resetting unit. and call again for hot water unit fires but I block exhaust intake so no air get in ,the heater will light then I slowly let air flow into exhaust fan . Heater will stay lit and work, If we let unit sit overnight same thing will happen again in morning, flame blows out. does any one have any ideas of a problem/ cure.
Not to may plumbers in my area even have a clue how to repair.
any help would be nice.
Thanks
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