Introduction
Instruction Manual DR-FC
91
s
12
Maintenance
12.1 Introduction
c
Note
Maintenance may only by carried out by an approved service and
maintenance engineer.
At each service, the water heater undergoes maintenance both on the water
side and on the gas side. The maintenance should be carried out in the following
order.
1.
;
2.
3.
;
4.
.
n
Remark
Before ordering spare parts, take a moment to write down the water heater
type and model, and the full serial number of the water heater. Only by
ordering with this information can you be sure to receive the correct spare
parts. These details can be found on the rating plate.
12.2 Preparation for
maintenance
To test whether all components are still working properly, you should complete
the following steps:
1. Activate the
MENU
with
B
.
2. Use
H
and
L
to position the cursor beside
OFF
. See
3. Confirm
OFF
with
E
.
4. Wait until the fan has stopped. The
S
icon is then dimmed.
c
Note
Failure to wait until the fan stops can cause damage to the water
heater.
5. Turn the water heater
OFF (position 0)
using the ON/OFF switch on the
control panel. See
6. Turn the control panel
ON
by putting the ON/OFF switch to
position I
.
MENU
»OFF
^ ON
È WEEK PROGRAM
Figure 12.1
Main menu
Figure 12.2
control panel
s
Summary of Contents for DR-FC 25
Page 2: ...2...
Page 16: ...Functioning of the water heater 16 Instruction Manual DR FC 2 gis...
Page 42: ...Filling and draining 42 Instruction Manual DR FC 4 gis...
Page 46: ...The control panel 46 Instruction Manual DR FC 5 gis...
Page 50: ...Status of the water heater 50 Instruction Manual DR FC 6 gis...
Page 56: ...Starting up and shutting down 56 Instruction Manual DR FC 7 gis...
Page 68: ...Main menu 68 Instruction Manual DR FC 8 gis...
Page 72: ...Service program 72 Instruction Manual DR FC 9 is...
Page 88: ...Troubleshooting 88 Instruction Manual DR FC 10 gis...
Page 90: ...Maintenance frequency 90 Instruction Manual DR FC 11 gs...