Trianco Problem


  #1  
Old 01-29-05, 12:08 PM
ken23
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Trianco Problem

I have a Trianco Heatmaker Plus, which is 15years old and uses Taco zone valves. This unit heats a raised ranch with baseboard heat. Earlier this week, I started having heating problems. The furnace would stop supplying heat and stop running. The gauge was reading between 10 15 PSI and around 90 F, if not lower. Interrupting power to furnace would reset the unit. Heat would be generated for a short period. This continued a few days until a hard fault occurred. The gas company technician replaced a limit switch last night.

Unfortunately, the problem returned, and sometimes resetting power will get the furnace running. Can anyone offer any suggestions regarding this problem? Thanks in advance.
 
  #2  
Old 01-29-05, 03:46 PM
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Need more information

What type of ignition system is on the boiler. Is it standing pilot, hot surface, spark to pilot, or spark to main burner? Is there an exhaust blower or vent damper?
 
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Old 01-29-05, 05:24 PM
ken23
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Additional Information

Hi Grady,

The furnace uses a Honeywell hot surface controller. This unit also uses an exhaust blower.

-Ken
 
  #4  
Old 01-29-05, 05:35 PM
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The most common problem with electronic ignitiion systems is the flame sensing circuit. Unless your boiler uses the ignitor for flame rectification, there should be a small metal rod with a porcelain insulator somewhere on the burners. Likely there is one small wire from it to the Honeywell module. Try to locate that rod, remove & clean the metal part with a scotch brite pad or steel wool. Also make sure the wire is snug on the control & the screw(s) holding the rod assembly are tight. It would not hurt to take sand paper & clean the rod holder & the area to which it mounts. All of this presumes the burner actually lights & then goes out.
 
 

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