C Error Codes; D Troubleshooting - Saunier Duval IsoTwin Condens T 26-CS/1 Instruction Manual

Machine Translated by Google

C Error codes

Remark
The code table only gives an extract of the codes as a whole.
Message
F.022
There is no or not
enough water
in the product or
water pressure is
too low.
F.028
The flame signal
was not detected
during the ignition
phase.

D Troubleshooting

Anomaly
Product that does not fit
not running (not
hot water, no
heater)
0020294193_00 IsoTwin Condens Instructions for use
Possible cause
Lack of water in
the heating installation
After five
unsuccessful ignition
attempts, the product
switched to mode
fault.
Possible cause
The shut-off valve of the
gas installed on site
and/or the shut-off valve
product gas is
firm.
The electrical
supply to the building is
cut off.
The stop valve
cold water supply is
closed.
The product is discontinued. ÿ Restarting the product. (ÿ page 14)
The temperature am 1. Set the flow temperature of the heating/the
temperature
regulated hot water
is too low and/or
the heating mode/the
domestic hot water
mode is off.
There is air in
the heating installation.
Measure
1. Check the filling pressure of
the heating installation. (ÿ page 13)
2. Top up the water in the installation of
heater. (ÿ page 13)
1. Check that the gas shut-off valve is
open.
2. Press the reset key
for more than 3 seconds.
– Maximum number of repetitions: 3
3. If you cannot remedy the problem
ignition, contact a qualified professional.
Measure
ÿ Open both gas stopcocks.
ÿ Check the building supply fuse. The product
automatically turns back on when the
power supply is restored.
ÿ Open the cold water shut-off valve.
age. (ÿ page 8)
2. Set the hot water temperature
sanitary. (ÿ page 9)
1. Bleed the heating system (ÿ cha
pitre Back-up of the heating system).
2. If you can't purge the installation
heating by yourself, contact a qualified
professional.
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