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Error # Meaning/Likely Causes Menu text
1 Brew Tank TCO is Open BREW TCO OPEN
(no Heater on brew tank): HWT DRAINED
Likely Causes: Draining and forgetting to refill. MODULES: POWER, HWT
Or Bad Triac.
2 Preheat Tank TCO is Open PREHEAT TCO OPEN
(no Heater on preheat tank): HWT DRAINED
Likely Causes: Draining and forgetting to refill. MODULES: POWER, HWT
Or Bad Triac.
3 Brewer must be descaled now: DESCALE REQUIRED
3 dispense cycles in a row exceed the Dispense
Timeout Limit minus 5 seconds, followed by one
brew that causes a dispense timeout. This error
message lets the user know damage may occur if
they do not descale now.
4 The float switch not sensed high while the CWT CHECK WATER SUPPLY
inlet valve is open and a time limit is exceeded. MODULES: POWER, CWT
Likely Causes: Inlet water disconnected.
Or low water pressure. Or Inlet Valve not opening.
Or CWT level sensor stuck low. Or Leaks
5 The float switch not sensed low during a brew cycle. RUNAWAY FILL
The inlet valve might be stuck open, and the Float MODULES: POWER, CWT
Switch is now preventing flooding.
Likely Causes: Leaky/Stuck Inlet Valve.
Or CWT level sensor stuck high.
6 The Preheat Tank thermistor is reading <37°F. Heater PREHEAT TANK COLD
will not be turned on until it reads above this MODULE: HWT
threshold to protect against damage.
Likely Causes: Brewer just stored at cold temperature.
Or bad Thermistor.
7 Same as above for Brew Tank BREW TANK COLD
MODULE: HWT
8 Thermistor in the Preheat Tank is reading > 240°F MODULES: HWT, POWER
Likely Causes: Problems with thermistor.
Or heater triac,
9 Same as above for Brew Tank MODULES: HWT, POWER
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