Bunn DUAL TM (Serial # DUAL010000 - Up) - Manual (Page 9)

Page 9
TROUBLESHOOTING (cont.)
Problem
Beverage level will not adjust
(Selector switch in any position)
Water flows into tank continuously
.
Water flows into tank continuously
(ON/OFF switch "ON").
Water from tank is not hot
Probable Cause
1. Brew Selector switch
1. Solenoid valve
2A. Level control board and level
probe (Electro/mechanical)
2B. Control assembly (Electronic)
1. Timer
2. Overflow protection switch
1. Limit thermostat
CAUTION - Do not eliminate or by-
pass limit thermostat. Use only re-
placement part #23717.0001
2A. Control Thermostat (Electro/me-
chanical)
2B. Control assembly (Electronic)
3. Contactor (Brewers with Recov-
ery Booster)
4. Tank heaters
5. Triac assembly (Electronic)
Remedy
Refer to Service - Selector switch for
testing procedures. See page 15
Refer to Service - Solenoid valve for
testing procedures. See page 35
Refer to Service - Level control board
for test procedures. See page 28
Refer to Service - Control assembly
for testing procedures. See page 22
thru 27
Refer to Service - Timer for testing
procedures. See page 38 or 41
Refer to Service - Overflow protec-
tion switch for testing procedures.
See page 32
Refer to Service -Limit thermostat
for testing procedures. See page 30
Refer to Service - Control Thermo-
stat for testing procedures. See page
19
Refer to Service - Control assembly
for testing procedure. See page 22
thru 27
Refer to Service - Contactor for test-
ing procedures. See page 17
Refer to Service - Tank heaters for
testing procedures. See page 37
Refer to Service - Triac assembly for
testing procedures. See page 26
27040 032201