Ferroli Modena 80 E Manuel D’Utilisation

MODENA 80 E

8.10 General test and fault finding

Chart 1

Check electrical supply - C.H. water pressure and frost protection

Is LED5 on?

Put main switch to on

CH Selector to

Summer “

” position

D.H.W. taps closed

Is 230V present across

terminals X1-1 X1-2?

Check and if necessary

replace 2A fuse

YES

Is LED5 ON now?

Repair external

wiring fault

Replace

main board

YES

Is LED5 flashing?

YES

Water pressure

is not set

between

1 - 1,5 bar?

YES

Set pressure to

1 - 1,5 bar

Check water

pressure

switch wiring

connection

Does fan run at full speed?

Go to CHART 2

YES

Does CH Pump run?

If the boiler temperature

is less than 5

frost protection is activated

Disconnect

CH flowtemp sensor

Has fan speed stopped?

Change main board

YES

Check and if

necessary

replace water

pressure switch

Chek the following carefully before starting

• Gas supply is turned on, is adequate and purged

• Electricity supply is turned on

• Polarity is correct

• CH pressure is set between 1 - 1,5 bar

• CH pump spins freely

YES