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We have a bosch 2400E tankless water heater. When we call for hot water the flame lights, powered exhaust fans

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Old 11-17-2010, 08:20 AM
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Default Bosch Tankless Water Heater
Model Number: 2400E - LP   Brand: Bosch   Age: 5 - 10 years   
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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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  #2 (permalink)  
Old 01-27-2011, 02:27 PM
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Default
Go to this web site - there is a wealth of information on the water heater

http://www.boschhotwater.net/Portals...leshooting.pdf


Steve KJR






Quote:
Originally Posted by kcrtm View Post
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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