Measures In Case The Room Temperature Is Constantly Too Low - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

Control unit diagnostics
Energy statement
The amount of electrical energy that has been used to operate the heat pump
and the amount of heating energy that has been transferred into the heating
system are displayed in menu item "Energy statem". These values are shown
for the last 12 months.
The solar yield is shown for the solar thermal system (if installed).
Press the following keys:
1. To log on as "Contractor", see
page 131
2. "Information"
3. "Statistics"
4. "Energy statem"
5. "Heat pump"
01-12 Month
e Electrical energy used [kWh]
per month
H Transferred heating energy
[kWh] per month for the heating
system

Measures in case the room temperature is constantly too low

1. Vent the heating circuits.
2. Check throughput of affected heat-
ing circuits. Recommended tem-
perature differential between
heating flow and return approx.
8 K.
3. Hydraulically balance the con-
nected heating circuits.
4. Check the outside temperature
sensor (see page 164).
(cont.)
The current month is shown on the
bottom line.
Example:
01 e: 140 H: 525
In January the heat pump required
140 kWh electrical energy and gener-
ated 525 kWh.
Note
To achieve realistic data capture,
parameter "Output" (5030) must be
set up correctly.
5. Increase the set room temperature
for standard mode and match the
heating curves.
Operating instructions
6. Allow heating operation via the
integral instantaneous heating
water heater (if installed) (see
page 152).
Troubleshooting
129