Nibe VVM 225 User Manual page 80

Low hot water temperature or a lack of hot water
• Closed or choked filling valve for the hot water.
– Open the valve.
• Mixing valve (if there is one installed) set too low.
– Adjust the mixer valve.
• VVM 225 in incorrect operating mode.
– Enter menu 4.2. If mode "auto" is selected, select a higher value on
"stop additional heat" in menu 4.9.2.
– If mode "manual" is selected, select "addition".
– Hot water is produced with VVM 225 in "manual" mode. If there is
no air/water heat pump, "addition" must be activated.
• Large hot water consumption.
– Wait until the hot water has heated up. Temporarily increased hot
water capacity (temporary lux) can be activated in menu 2.1.
• Too low hot water setting.
– Enter menu 2.2 and select a higher comfort mode.
• Low hot water access with the "Smart Control" function active.
– If the hot water usage has been low, less hot water than normal will
be produced. Restart the product.
• Too low or no operating prioritisation of hot water.
– Enter menu 4.9.1 and increase the time for when hot water is to be
prioritised. Note that, if the time for hot water is increased, the time
for heating production is reduced, which can give lower/uneven room
temperatures.
• "Holiday mode" activated in menu 4.7.
– Enter menu 4.7 and select "Off".
Low room temperature
• Closed thermostats in several rooms.
– Set the thermostats to max, in as many rooms as possible. Adjust
the room temperature via menu 1.1, instead of choking the thermo-
stats.
80 Chapter 4 | Disturbances in comfort NIBE VVM 225