Buderus 2107 Intermittent Failure

AJinCT

My parents have a Buderus G215/4 with a Logamatic 2107 that I posted about almost two years ago on here. The boiler is oversized, it's about 142k, running a 51k and a 75k ahu, along with a 40 gallon Phase III indirect.

The 2107 partially failed Saturday night, with all three lights flashing, and one of the pumps (we're not sure which) either feeding the ahus or the DHW tank to the point where the boiler temp was extremely low. We were able to get emergency mode running for the night. Yesterday, it ran in Automatic mode for the morning, then failed again in the afternoon, at which point we put it back on emergency. It's been running in Automatic mode today, and both ahus and hot water has been fine.

Is this thing toast, or is there any hope for it? The current oil company has fried something in the burner twice during annual cleaning/service. Could this have anything to do with the failing 2107?

If it's toast, they're most likely going to have a different contractor (than who installed it) put a Honeywell ODR control on it, which is what they typically use. All equipment was installed in 2000, except for the Buderus and 2107, which replaced a cracked Burnham V7. Any thoughts on the setup and what to ask for from the new contractor? I believe it's fired as low as it can be (1.2GPH). Can a Honeywell ODR controller be set up without DHW priority to accommodate the oversized boiler and ahus that don't shut off when DHW priority is running, and still be intelligent enough to fire at higher temperatures for DHW?

Ironman

There are less expensive controllers that can do ODR, but everyone that I'm familiar with will not do domestic by themselves.

We would really need to see everything in the entire setup to make a recommendation.

You can NOT down fire a Buderus. Upfire as much as 10%, but not down fire.

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Ironman

That's why we need pics to see everything. There are several ways it could have been piped and different ancillary controls that could be employed.

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Ironman

Tekmar 260.

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Big Ed_4

All three lights flashing ? Not sure call tech support see what that means ... Have an meter ready .. Could be just an bad thermistor or control part .. Before you thow it out ..

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Ironman

Sorry, but you are not their customer; the contractor who sells their equipment is. And you're the customer of your contractor.

We're not talking a tv or an Xbox; we're talking about equipment that requires technical expertise, a license(s), insurance,etc,etc,etc.

They have an ethical and legal obligation to only give technical advice to contractors. What if they gave you advice and your boiler burned the house down or someone died. You or your family would get a lawyer and sue them. A contractor can't do that because his license makes him responsible for his work.

You can't bypass the contractor and then expect the manufacturer to deal directly with you.

HVACNUT

> @AJinCT said:
> Any thoughts on the setup and what to ask for from the new contractor? I believe it's fired as low as it can be (1.2GPH). Can a Honeywell ODR controller be set up without DHW priority to accommodate the oversized boiler and ahus that don't shut off when DHW priority is running, and still be intelligent enough to fire at higher temperatures for DHW?

I'm don't know about the Honeywell aquastat, but the Beckett Aquasmart and Hydrolevel Hydrostat both offer domestic high temp and the option of priority.
The indirect get wired into the aquastat and then configure it for domestic.
You will need the Phase sensor and thermostat though and remove the Buderus sensor.
You'll have to change the boiler well also.
The 2107 is an awesome control. It'll be a shame to get rid of it.

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Ironman

AJinCT said:

Ironman said:

Sorry, but you are not their customer; the contractor who sells their equipment is. And you're the customer of your contractor.

They should still be able to provide technical support to the customer who paid for the product. That is just piss poor customer service to refuse to even talk to the end user.

Also, a lot of people do their own work, what about them? Just just get no support? We don't do our own boiler work, but I know several people who do, and while they don't have Buderus/Bosch equipment, it's the same idea.

Did you even read my post coherently?

I know of NO manufacturer that will give direct tech support to the end user in this industry for the reasons stated. Your recourse is your contractor, not the manufacturer.

Just because you wanna operate outside of the system, doesn't mean that everyone in it is gonna suddenly bow to your demands.

It's the same way when you buy a vehicle: you may choose to work on it yourself, but you won't get tech support from the manufacturer. The dealer gets that, not the end user.

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HVACNUT

@AJinCT, who's responsible if something goes wrong while talking to tech support?
Bosch/Buderus has EXCELLENT tech support and a regional rep will often meet the contractor on site to resolve issues.
It's purely liability protection that they only deal with the trade.
Read the manual or call a pro, but don't stomp your feet because your out of your depth.
BTW, Beckett offers wireless ODR.

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ChasMan

Slant Fin will help you out as long as you do your research and sound competent. I remember a couple of instances calling them and they were very helpful.

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