Question about Smith A.O. SMITH Cyclone XHE Natural Gas Commercial Water Heater BTH-120

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Air pressure switch failure ao smith cyclone water heater

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Posted on Jan 02, 2017

  • 2463 Answers

SOURCE: I have a Cyclone XHE natural gas water heater that

Hi sounds like you should change the pressure switch

Posted on Feb 18, 2010

  • 368 Answers

SOURCE: We have a AO Smith

This doesn't sound fun. I would call the AO Smith technical support number and they might be able to help you figure this out. I hope this helps.

Please vote for this answer. Thank you.

Posted on Aug 23, 2011

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Installation: Electrical Requirements


13Mb product manual is a big download ... electrical info page 13:
http://waterheatertimer.org/pdf/AO-Smith-Cyclone-gas-water-heater.pdf
http://waterheatertimer.org/pdf/AO-Smith-Cyclone-electrical-connection.pdf
Recommended both water heaters require dedicated single-phase 15 amp 120Volt line with correct polarity. This is 14 gauge wire and 15 amp breaker for each unit.
I would put both water heaters on surge protection and GFCI. Most water heaters are not protected from surge, and manual says line noise can affect operation of water heater.
Your local code would say if GFCI is required. Install GFCI breaker in main panel if required.
Install inline surge protector: Or add main breaker box protection.
http://www.amazon.com/dp/B003AU0Z48/?tag=waterheaterti-20

AO Smith service handbooks:
http://www.hotwater.com/resources/product-literature/service-handbooks/
Add a comment and say what you discover

May 17, 2013 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

AO Smith BTH 500 ignitor keeps burning out,is my electronic control the problem?


I would report problem to AO Smith.
Also ask question on pro water heater forum
http://www.thetankatwaterheaterrescue.com/forums/forum3/

AO Smith service handbooks:
http://www.hotwater.com/resources/product-literature/service-handbooks/
If the igniter is not turning off, then that would explain early failure, and it would be caused by the control chipset

Mar 21, 2013 | A.O. Smith BTH-500A BTH-500A 130 Gallon...

1 Answer

On A.O. Smith water heater model BTH 199 100 where is the heat sensor rod located ?


Parts list:
http://www.hotwater.com/lit/partslists/197728-004.pdf
Flame rod, flame sensor sits next to igniter inside combustion chamber. This can be cleaned with sandpaper. Do not touch with fingers. Purpose of flame rod is to detect whether ignition has caused actual, sustainable fire inside the combustion chamber.
If sensor is bad, or no ignition is detected after 2-3 attempts, then 'no ignition' error is given.
Bad gas control valve, bad-or-dirty flame rod-sensor, low gas pressure, misaligned rod, dirty combustion parts, etc

Service handbook:
http://www.hotwater.com/lit/training/316586.pdf
High gas pressure spikes can daMAGE gas control valve p7

Product manual:
http://www.hotwater.com/lit/im/com_gas/197727.pdf
Word-search for 'failure'
Low gas pressure. p14 and p54
1-3 trials before declaring 'ignition failure. p48
bad flame sensor (clean with sandpaper) #10 p58
unit must be grounded (check outlet with circuit analyzer) #12 p58
Sequence flow chart p59
Rough starts = ignition failure p60
Troubleshoot chart - ignition failure p62

Mar 12, 2013 | A.O. Smith BTH-199 BTH-199 100 Gallon...

1 Answer

We have a AO Smith water heater Model CYCLONE X1 s/n - 0813A001865 we are having issues with this unit. The unit iwas purchased in 2008. Can you send me information on this water heater. Our plumber bought...


This doesn't sound fun. I would call the AO Smith technical support number and they might be able to help you figure this out. I hope this helps.

Please vote for this answer. Thank you.

Aug 22, 2011 | Smith A.O. SMITH Cyclone XHE Natural Gas...

1 Answer

I have a commercial water heater and on the screen it says "Blower Prover Open" and i have no hot water at any sinks.


The fan is not operating -- when this conditon exists, the unit will not fire up. Here's a link to the manual. The unit needs servicing.

http://www.hotwater.com/lit/im/com_gas/318556-000.pdf


Here are some excerpts from the manual relative to the blower prover and error msgs.



If the Blower Prover switch contacts do not close after the

Combustion Blower is energized the Control System will lock out and display Blower Prover Open


Blower Prover Open

Fault occurred 2 mins ago

The blower prover switch remains

open after the blower has been

energized.

Call a service professional:

Your Company Name Here

(press [DOWN] for more....)



These plastic sensing tubes must be routed to the correct sensing ports on the water heater. Sensing tube

routing should always be checked whenever Blower Prover Open, Blower Prover Failure, Blocked Air

Intake or Blocked Exhaust is displayed on the Control System LCD, see Figure 31 on page 29. These "Fault

Conditions" can be caused by incorrect sensing tube routing.




Charlie

Mar 20, 2011 | Smith A.O. SMITH Cyclone XHE Natural Gas...

1 Answer

I have a Cyclone XHE model BTH 120-250(A) series 970 and 973 flashing fault code 11. what is major reason?


Code 11-Pressure switch fails to open or close after five minutes.

This unit will produce condensation--quite heavily at times. The outlet drain hose must be allowed
to drain. Exhaust Vent piping must also drain condensate. Code 11 error would imply that these
must be checked.

90% of the time this problem is related to installation issues with either the vent or drain.

Jan 06, 2011 | Smith A.O. SMITH Cyclone XHE Natural Gas...

1 Answer

A O Smith BTH 250 error code B2 Ignition Failure What next? (I cleaned the flame sensor.)


You need to check your hot surface ignitor. You do this by checking for continuity through it with all power off. If you need to replace this be very careful as it will break if you bump the box to hard. You should check all your limit switches at the same time. Good luck.

Dec 14, 2009 | Smith A.O. SMITH Cyclone XHE Natural Gas...

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