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Ultima 65 PCB Part Number Ordering Guide

Please follow this guide to make sure you get the correct PCB for your Ultima 65. There are multiple versions based on model & serial number, so we'll show you what to look for here.

Compare the pictures & info below with the old PCB (printed circuit board) that is being removed:

For the Ultima 65 (Not -1) the PCB needed does not have the wires for an External Triac and has two (2) adjustment pots for calibrating.

Main PCB # 706011116

Heat Sensor Assembly (paddle style) # 706040202


For the Ultima 65-1 (Non-ROHS) the PCB needed comes as a kit that includes the PCB, External Triac, Heat Sink and screws.

The PCB has the Blue, Yellow and Red wires to attach to the External Triac, one (1) adjustment pot for calibrating, 120V white sticker and a Rev. 2.0.2 on the chip.

Serial Number Prior to SH00001G

PCB Retro Kit Ultima 65-1 # 1722914

Heat Sensor (IR White Non-ROHS) 705200201




For the Ultima 65-1 ROHS Compliant the PCB needed has the Blue, Yellow and Red wires to attach to the External Triac, one (1) adjustment pot for calibrating, GREEN New Sensor sticker and a Rev. 2.0.4 on the chip.

Serial Number Starting SH00001G and newer.

PCB ASSY NEW U-65 MAIN (ROHS) # 638900405

Heat Sensor (IR GREEN ROHS) Part Number 639400018



For the Ultima 65-2 Gray, the PCB Part Number is listed below.

Serial Number Starting TH1618700011 and forward.

PCB Ultima 65-2 Gray # ACOUL65SP024

Triac Assembly # ACOUL65SP015

If your Ultima's PCB doesn't quite match up with these, call us at 1-866-455-9900 and we'll help you find the correct PCB and any other parts you need to get your Ultima 65 running perfectly again!