Robur Caldaria 100.2 Condensing+ export, Installation, Use And Maintenance Manual

Diagnostics 

Installation, use and maintenance manual – Caldaria Con export 

51

8

8  

 DIAGNOSTICS

In the event of a malfunction of the appliance, before contacting 

the TAC, make sure that:

▶

There is a full electricity supply.

▶

The gas is supplied.

▶

The gas pressure is within the indicated limits.

▶

The remote control (if any) is set so that the appliance is 

switched on and the appliance does not signal a fault.

8.1 

 SYSTEM PRESSURE RESTORE

In case of malfunction of the appliance, with pressure inside the 

hydraulic circuit lower than 0,3 bar, which can be seen through 

the pressure gauge located on the instrument panel inside the 

boiler, it is necessary, after having identified and solved any leaks 

on the circuit, to proceed with the restoring the correct amount 

of water (with glycol, if needed), as indicated in Paragraph 

3.3 

p. 22.

8.2 

 ERROR  CODES

To display the last 5 fault codes, from the most recent in chrono-
logical order, activate the off mode using the 

 key (Figure 

6.1 

p. 47) and press and hold the 

 key for 5 seconds.

▶

To scroll through the list of stored faults, use the 

 and 

keys of the heating side 

.

▶

To reset the fault history, press the reset key 

.

▶

To exit the display press the 

 key.

Only for Caldaria 100.2

The fault codes are shown only in the display of the mas-

ter control panel (detail 1 of Figure 5.4 

p. 36).

In the event of faults that are not common to both units, 

the fault message code is displayed with the prefix 01 or 

02, which indicates in which unit the fault is present (01 

= master unit, 02 = slave unit).

In the event of failure of both appliances, the display 

will show only the most severe code. To display the next 
code, press the 

 key of the DHW circuit 

. After re-

solving the most severe code, the display will show the 

next code alternating with the collector temperature.

When a fault code represents an anomaly common to 

both units (such as E04, E78, E06, E99) it is preceded by 

the word E(x), where (x) will be the number of the chron-

ological order in the last 5 reports.

Table 8.1  

 Error  codes

Code

Fault

Possible cause

Remedial action

Reset

E01

Flame lockout

Without flame ignition

No gas supply

Check the gas supply network

Manual reset (press 

key) (1)

Broken or badly positioned ignition electrode

Replace

Gas valve fault

Replace

Slow ignition set too low

Adjust the minimum pressure to the burner or 
slow ignition

Inlet pressure of gas valve too high (only for LPG 
supply)

Check the maximum burner pressure

With flame ignition

Power supply with phase and neutral inverted

Connect the power supply correctly

Manual reset (press 

key) (1)

Flame detector fault

Replace

Detection electrode cable disconnected

Check the electrical connection

Phase-to-phase electric current

If the voltage measured between neutral and 
earth is almost the same as the one measured 
between phase and earth, eliminate the 
dispersions

E02

Safety thermostat trip 
(95 °C)

Hydraulic circuit overheating

Remove the cause of the lack of heat exchange

Automatic

Thermostat cable broken or disconnected

Check the electrical connection

Thermostat fault

Replace

E03

Flue safety thermal 
fuse (102 °C)

Hydraulic circuit overheating

Remove the cause of the lack of heat exchange

Manual reset (press 

key) (1)

Thermal fuse fault

Replace

Thermal fuse cable disconnected

Check the electrical connection

E04

Low system water 
pressure

Insufficient water pressure in the system (less 
than 0,3 bar)

Load the system at the required pressure

Automatic

Water pressure cable disconnected

Check the electrical connection

Water pressure switch fault

Replace

E05

Heating probe fault

Probe fault or out of calibration (nominal resist-
ance 10 KΩ at 25 °C)

Replace

Automatic

Probe connector wet or disconnected

Check the electrical connection

E06 (2)

DHW probe fault

Probe fault or out of calibration (nominal resist-
ance 10 KΩ at 25 °C)

Replace

Automatic

Probe connector wet or disconnected

Check the electrical connection

E10 (3)

False safety trip

Incorrect setting of parameter P32 to value 1

Set parameter P32 to 0

Automatic

E14 (4)

Air pressure switch

Exhaust duct obstructed

Check the flue exhaust duct

Manual reset (press 

key) (1)

Pressure switch disconnected

Check the electrical connection

Pressure switch fault

Replace

1 

In the Caldaria 100.2 press the 

 key on the master control panel.

2 

Only for boilers with DHW production.

3 

Not applicable to Caldaria 100.2.

4 

Only for Caldaria 100.2.