NO hot water

My daughter has a Bradford White water heater # MITW40L6L910 for what it's worth. The unit is only about 7 years old with relatively little use. By that I mean there are not 14 people in the house taking 25 showers a day and doing tons of wash. It is ONE PERSON for years and now TWO people.
I am told that the manual states that this unit has ELECTRONIC IGNITION for the PILOT LIGHT. I assume this means there IS A PILOT LIGHT but it lights like a barbecue grill if it needs relighting.
NO hot water. Hubby tried to relight it and no good. It has a POWER VENT on top. I read somewhere that the POWERVENT is tied in to the igniton system.
QUESTION ?????????
Vent does not go on and the heater does NOT light up ? Correct ?
I did a lot of searching on the internet and found virtually nothing on TROUBLESHOOTING these models. I have the NON-POWERVENT models and am 60 miles away. So I have not seen their unit to try and help.
I went to HOW STUFF WORKS and no good - info only on older NON-POWERVENT models.
1) Comments/suggestions for TROUBLESHOOTING this problem ?? ( other than the OBVIOUS one = call a PRO )
2)Any sites with info on these heaters with POWER VENTS ? I found none.
3) On POWERVENT models, if they need to be replaced, does the VENT ASSEMBLY just hook on to the NEW HEATER ???
4) Do the POWERVENT assemblies have a UNIVERSAL plug ???
TIA
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Zing wrote:

The Power Vent (induced draft blower) is an integral part of the heater. New heater will come with it.
If the blower does not come on, it could mean there is no electric power to the heater, or that the thermostat inside the heater is not functioning, or that the control module is bad.
There is very little the homeowner can do in troubleshooting other than verifying that power is available to the heater.
Have them look up the warranty papers- some heaters provide 7 yrs coverage.
It will be a tossup on a 7 yr old heater whether to repair or replace. And the PowerVent is expensive.
Jim
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it is.

Yes.
The only answer is the obvious. call a pro. These can be a problem to troubleshoot. it could be any umber of things and I cannot troubleshoot this over the net. +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ spam protection measure, Please remove the 33 to send e-mail
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That narrows it down. Look for something brown and replace it ;)
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On my powervent water heater the power line goes directly to the thermostat. Unless it is working properly (closing the circuit to the vent motor, ignition, etc), nothing else starts.
When the thermostat calls for heat, the blower on the vent starts. The airflow builds and trips a switch that fires the electronic ignition. When the ignition coil heats, then the gas supply to the burner turns on. You can hear things happen in sequence. There is a series of clicks followed by the whoosh of the gas flame.
But, the circuitry is complicated because of interlocks. Without someone who can check the circuitry, there is little you can do by remote control except perhaps make sure that the heater is getting power. Certainly check the circuit breaker and if the heater is plugged into an outlet, make sure the plug is tight and that there is power at that plug.
TKM
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