User Manual
12
TROUBLE SHOOTING
The following table provides solutions for problems you may encounter 
as you use your Technivorm Moccamaster. If you do not find a solution 
to your specific problem, or the problem persists after troubleshoot-
ing, please contact Technivorm-Moccamaster Customer Service at 
1.855.662.2200.
Problem Possible Cause solution
Brewer not working;  
lights not illuminated
Power supply Check to ensure brewer is plugged into outlet.
Power light is on, 
but coffee maker is 
not working
Thermal carafe is not 
properly in place 
Place carafe snugly against white button 
at base. 
Mineral buildup in 
heating element
See descaling instruction in manual.
Brew basket is 
overflowing*
Manual drip-stop 
is in closed position
Move switch on brew-basket to open position.
Thermal carafe is not 
keeping coffee hot
Defective thermal carafe 
Contact authorized service center 
for replacement.
Possible damage to carafe 
vacuum seal 
Hot-plate stays on after 
brewing is complete 
Your brewer has manual 
power off switch
Manually turn power switch off. Some models 
have optional “auto-off” where power switch 
shuts off hot-plate in 100 minutes.
Coffee tastes 
weak or bitter
Incorrect amount of 
coffee used in brewing
To brew to SCAA Gold Cup Standard use 
2 Tbsp. coffee for every 6 oz. cold water. 
Incorrect grind of coffee
Technivorm Moccamaster filtered drip grind 
should be on the coarser side. The grind 
affects the extraction of coffee soluables, 
which affects the flavor of your brewed coffee.
Brew cycle is taking 
more than 6 minutes 
to complete. 
Coffee brewer needs 
to be descaled
See descaling instruction in manual.
Water dripping out 
very slowly.
The brewer may be 
clogged with mineral 
deposits and needs to 
be descaled
See descaling instruction in manual.
Glass tube in water 
reservoir is cloudy
Brewer needs 
to be descaled
See descaling instruction in manual.
MOCCAMASTER MODELS
* NOTE: Clogging and backing up of water and/or coffee in the filter basket can 
occur under any or a combination of any of the following conditions: the use 
of too finely ground coffee, using two or more paper filters, using the gold mesh 
filter in conjunction with a paper filter or not properly cleaning oils or grounds 
from the gold mesh filter, or allowing coffee grounds to spill over the filter.










