Triac Map; Symptom Reference Guide - Bunn My Cafe AP Technical Training Manual

Triac Map

1. Heater (TH1)
2. Inlet Valve (Brown Wire) (TH2)
3. Brew Pump (TH4)
4. Not Used (Red Wire) (TH3)

Symptom Reference Guide

Problem
No Heat
Over Heating (Steaming)
No Refill
1
2
3
4
Probable Cause
Tank Heater
Limit Thermostat
Temperature Sensor
CBA
Temperature Sensor
CBA
Main Water Source
Inlet Valve
Fill Circuit Grounded
CBA
Water Flow Path Restricted (flow meter or tank fill
tube)
Bunn-O-Matic Corporation
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