Hot water comes and goes!?
I live in Spain and have a Vaillant Geyser
(Water Heater)
References MAG premium ES 19/2 GXI, GI and
MAG premium ES24/2 GXI
Appliance is 10 years old and recently had a 'membrane' replaced.
Can you advise where I can obtain the instruction manual in English?
Thanking you in anticipation
Fredericka Thompson, November 2017