65
BOILER STATUS
MALFUNCTION
PROBABLE CAUSE
SOLUTION
E41**
No communication between board and
peripheral devices (panel interface and/
or zone boards).
Interface display is disconnected.
Reconnect it.
Zone boards are disconnected.
Reconnect them.
Interface display and/or zone boards are
faulty.
Replace them.
E42
Solar system setting error.
Wrong boiler board or solar board setting
parameters.
Check that the P03 and P18 parameter
set values match with those specified on
the reference tables.
E43
Zone configuration error.
Wrong setting of P61 parameter.
Setting parameters for boiler board are not
correct.
Check that the P61 parameter set values
match with those specified on the
reference tables.
E44**
Ambient probe 1 failure.
Ambient probe is disconnected.
Reconnect it.
Ambient probe is faulty.
Replace it.
E45**
Ambient probe 2 failure.
Ambient probe is disconnected.
Reconnect it.
Ambient probe is faulty.
Replace it.
E46
Pressure transducer failure.
Pressure transducer is disconnected.
Reconnect it.
Pressure transducer is faulty.
Replace it.
E47
External probe with connected ambient
probe error.
External probe is disconnected.
Reconnect it.
External probe is faulty.
Replace it.
E49
The interface does not work.
The interface does not communicate with
the boiler board.
Replace it.
E80*
The ∆T between flow and return is not
within the limits.
Flow and/or return probes are faulty.
Replace them.
Obstructed bypass pipe
Remove any obstructions, or replace
the pipe.
The bypass valve is not assembled or
wrongly assembled.
Restore bypass valve correct assembling.
Heat exchanger primary circuit is obstructed. Clean or replace the exchanger.
E86*
Flow temperature increases too quickly.
Pump is seized.
Unseize the pump.
Pump is faulty.
Replace it.
Air present inside heating system.
Bleed the air from the boiler by opening
the jollies on the exchanger and pump.
E87*
Return temperature increases too quickly.
Circulation of foreign water in boiler.
Check that there are no other boilers or
additional cascading heat sources.
Air present inside heating system.
Bleed the air from the boiler by opening
the jollies on the exchanger and pump.
E89***
Faulty flue temperature value.
Flue probe on heat exchanger is faulty or
damaged.
Replace it.
E98
The max. number of resets from the
boiler touch screen has been reached.
The user has reached the max. number of
resettable errors from boiler control panel.
Power off and then on using the switch
installed ahead of the boiler.
E99
The max. number of resets from the
Remote Control has been reached.
The user has reached the max. number of
resettable values from the Remote Control. Reset boiler interface.
* errors that can be reset by the user by keeping the 'Reset' button pressed
** self-resettable errors, they automatically reset as soon as the failure is fixed
*** errors that can be reset only by the Technical Service personnel
In case errors E51, E52, E53, E73, E85, E89, E90 and E91 might occur, contact a qualified service centre.