Troubleshooting Trinity T-150 Boiler

[kevpalm]

I have an NTI Trinity T-150 wall-mounted boiler that was installed in winter 2004. I am suddenly getting the message "ASC" on the Sentry control panel. The manual indicates this means that the air switch is closed, which is preventing the boiler from firing. When the thermostat calls for heat, the TACO controller energizes the primary and secondary pumps, but the Sentry is preventing the boiler from starting up.

I'm looking for (a) help in troubleshooting and getting the system running because it's getting cold and the wife is not pleased, and (b) a local contractor/plumber who can assist in doing a full diagnostic on this system and any maintenance required to keep this from occurring again. I'm in the Washington, DC area.

Thanks for any assistance you can offer.

[LiQuId]

Air switches often foul, check the tubing comnnected to the switch for debris, signs of cracking and or kinks in the line.

[zildj]

Hey kevpalm;

Any luck with your asc error problem? I am having the same issue.

Hey LiQuId;

I have replaced the air switch and the tubing is good. any ideas?

thx

[LiQuId]

did you check all ports that the tubing is connected to ? could be a blockage in the connection. asside from that ( and being un familiar with this particular boiler ) could be a circuit board problem giving a false diagnosis. you could bypass the switch temporarilly to see if its the issue.

Disclamer: BEING AWARE that this is a safety device and must not be bypassed for any length of time and only to diagnose this problem.

[zildj]

Hi,

Yes ports and tube are checked and no blockage.
I have been bypassing the switch to turn on the boiler.
The air switch is new and is testing good.
The blower also have a circuit board, maybe that is causing the issue?
What boilers are you familiar with? What is preferred over NTI?
My location is Alberta.

Sounds like I am having the same issue as kevpalm.

thx