Bunn HW2 - Page 5

TROUBLESHOOTING (cont.)
Problem Probable Cause Remedy
Equipment will not operate
(cont.)
Automatic refill will not
operate after drawing hot
water.
Water flows into the tank
continuously (Dispenser
disconnected from power
source).
Water flows into the tank
continuously (Dispenser
connected to power source).
Water is cold.
2. Safety overflow switch
1. No water
2. Water strainer/flow control
3. Liquid level system
4. Solenoid valve
1. Solenoid valve
1. Liquid level system
1. Safety overflow switch
2. Limit thermostat
3. Tank heater
4. Temperature control
Refer to Service – safety overflow switch
for testing procedures.
Check plumbing and shut-off valves.
(A) Direction of flow arrow must be
pointing towards dispenser.
(B) Remove the strainer/flow control and
check for obstructions. Clear or replace.
Refer to Service – electronic controls for
testing procedures.
Refer to Service – solenoid valve for
testing procedures.
Refer to Service – solenoid valve for
testing procedures.
Refer to Service – electronic controls for
testing procedures.
Refer to Service – safety overflow switch
for testing procedures.
Refer to Service – limit thermostat for
testing procedures.
Refer to Service – tank heater for testing
procedures.
Refer to Service – electronic controls for
testing procedures.
CAUTION – Do not eliminate or bypass limit thermostat. Use only B.O.M. replacement part #23717.0003.
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