Bunn F-20, F-15, F-35 service manual Factory Authorized Service, No Hot

Models: F-20 F-35 F-15

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NO HOT

FACTORY AUTHORIZED SERVICE

 

'0551 BLE CAUSE

NO HOT

1. Tank heater

WATER

 

WHAT TO CHECK

1.Voltage at tank heater terminals with control thermostat knob in the fully clockwise position.

Voltage should be: Model F35

240 volts A.C. Models F20 and F15 120 volts A.C.

REMEDY

1.If correct voltage is

present at the tank heater terminals and

water in tank is not being

heated, replace tank heater.

If voltage is not present at tank heater termina Is, refer to step 2.

If incorrect voltage is present on tank heater terminals, refer to "Electrician's Installation Instructions."

2. Limit Thermostat or Control Thermostat.

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WATER KEEPS

1. Solenoid Valve

RUNNING

 

(BREWER WON'T

 

SHUT OFF

 

ELECTRICALLY) .

 

2.With control thermostat knob in the fully clockwise position, check the voltage between the

white (or red) wire on the tank heater terminal

and the incoming terminal (black wire) on the limit thermostat, then the outgoing (blue wire) terminal on the

limit thermostat. Voltage should be: Models

F15 and F20, 120 volts

A.C. Model F35, 240 volts A.C.

or six times. clockwise for lower

1.Refer to "Dripping" section, step 2.

2.(A) If voltage is present on incoming terminal (black wire) on the limit thermostat, but not on the outgoing terminal, (blue

wire) replace limit thermostat.

(B)If voltage is present on both terminals on the limit thermostat, but not across tank heater

terminals, replace control thermostat.

(C) If voltage is not

present on the incoming terminal on the limit

thermostat, refer to "No Power" Section.

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1.Refer to "Dripping" section, step 2.

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Bunn F-20, F-15, F-35 service manual Factory Authorized Service, No Hot