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The UNLOCK/DISPENSE pad rapidly flashes red if finger remains on it after dispensing and no
water is dispensed.
Power
[White]
Ready [Green]
If finger remains on the UNLOCK/DISPENSE pad more than 35 seconds while rapidly flashing
red-the controls "lock out" and READY LIGHT & HEATING LIGHT will flash rapidly to show a
Heater
[White]
fault state. See keyboard errors 1 & 2 in chart below
Touch
[Red]
PUSH
Pad
Switch machine "OFF" for about ten seconds, and then toggle back "ON" (Control Reset)
After controls initiate, hot water tank level and temperature are checked- then the "READY" light will activate
This will take approximately 2 minutes for filled and heated unit; up to 20-30 minutes for a new/empty unit
Color of LED-See above
"TOUCH
"READY"
"HEATER"
PAD"
Green
White
Red
BLINK
BLINK
BLINK
BLINK
Off
Off
BLINK
Off
ON
BLINK
ON
Off
BLINK
ON
ON
BLINK
BLINK
Off
BOIL ERROR-This means that the water in the tank is boiling, flat temperature—no increase to set point.
This fault usually occurs at higher elevations where boiling point is reduced from lower barometric pressure compared to sea level.
Recommended action: review boiling point correction for altitude table (page-6) with suggested setting for the operator at higher elevations.
BLINK
BLINK
ON
HEATER OPEN- This means that the power board or that the heater control triac is sending power to the heater, but the heating element is
faulty or damaged-(OPEN-circuit).
Fault is with the damaged heating element or bad connection or control circuit problems
Recommended action. Check all wiring, internal and external connections –if good: service as follows: In order of repair
1: Test & replace heater 2: Replace triac 3: Replace control board
BLINK
Off
BLINK
HEATER SHORTED-The triac is stuck closed, (MAKE position in Make/Break contactor code). Power is always getting to the heater
meaning it is out of the control system. Traic and solid state relays fail CLOSED, in the Make Position. This fault usually occurs from a stuck
(faulty) triac. The heating element is powered thru damaged triac (no signal to triac but it is conducting power to the heater)
Recommended action. Replace triac—Check all wiring, internal and external connections.
BLINK
ON
BLINK
Go to fetco.com for the latest version of all information
Error Messages
All controls are disabled during fault state.
Error type
System error
Shorting out the thermistor will cause the thermistor error at once
Thermistor short
Opening the thermistor will cause the thermistor error at once
Thermistor open
Tank has not filled in 6 minutes
Initial fill error
Tank does not re-fill after 1 minute
Fill error
If the heater is onand
Boil error
If the heater is onand
Heater open
If the heater is supposed
Heater shorted
TRIAC Failure
1. Press and hold the button with unit idle.
After 3 seconds unit goes into proportional mode
As soon as unit begins to dispense a 45 second timer is started
Keyboard error 1
unit will stop dispensing after the programmed timed
keyboard error is caused if the button remains held for more than 45 seconds
2. Press and release then press to have a manual dispense
if the button remains held for more than 30 seconds-->the dispense will stop.
Keyboard error 2
45 Seconds after the dispense stops the unit goes into keyboard error
To clear Fault State:
Error Messages
Tank temperature is not increasing according to
software logic and the tank temperature > 92C
Tank temperature is not increasing according to
software logic and the tank temperature < 92C
The heater is off during (7 min) temperature rise
time and the tank temperature is greater than
to be off and
the software logic calculates
P119 User Guide HWD-2102
7
.
REVISED MARCH 2020
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