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<blockquote data-quote="SPECIAL LOCATION" data-source="post: 180361" data-attributes="member: 250"><p>Is the programmer mechanical or electronic?</p><p></p><p>We still have a mechanical programmer (Randall 4033) that is 25+ years old!!!!</p><p></p><p>To prove the programmer if wired as per Honeywell number scheme it would be terminals..</p><p></p><p>4:=Heat ON</p><p></p><p>6:=Water ON</p><p></p><p>7:=Water OFF</p><p></p><p>at the control J-box</p><p></p><p>Either strap some lives across terminals as appropriate to test each condition..</p><p></p><p>or Diss wires from programmer &amp; meter out voltages coming OUT of programmer contacts..</p><p></p><p>Other thoughts..</p><p></p><p>How old is the three port valve??</p><p></p><p>Could there be something dodgy on the internals with the motor stall circuit?</p></blockquote><p></p>
[QUOTE="SPECIAL LOCATION, post: 180361, member: 250"] Is the programmer mechanical or electronic? We still have a mechanical programmer (Randall 4033) that is 25+ years old!!!! To prove the programmer if wired as per Honeywell number scheme it would be terminals.. 4:=Heat ON 6:=Water ON 7:=Water OFF at the control J-box Either strap some lives across terminals as appropriate to test each condition.. or Diss wires from programmer & meter out voltages coming OUT of programmer contacts.. Other thoughts.. How old is the three port valve?? Could there be something dodgy on the internals with the motor stall circuit? [/QUOTE]
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