91
16 - USE
16.14 - Diagnostic:
Blocking errors
“Err”
Blocking errors are generated by a
permanent fault. There is no way to
unlock the unit other than to resolve
the cause of the fault.
On multi-burner unit models 399
and 500, when the burner goes into
a blocking error state, you’ll see
icon and the corresponding burner
icon (
or
) if failing will blink. To
see the blocking error code, press the
RESET key and display will show the
blocking error code. Press and hold
the RESET key to go back into normal
display condition.
Err
Description
Checks
Solutions
Err 0
Self checking
Not needed
During start up, display shows “Err 0” temporarily, because is doing its
own self checking
Err 45
Internal software error
Replace the power control board
Err 46
Internal software error
Replace the power control board
Err 47
Internal software error
Replace the power control board
Err 48
Internal software error
Replace the power control board
Err 49
Internal software error
Replace the power control board
Err 50
Internal hardware error
Replace the power control board
Err 51
Internal hardware error
Replace the power control board
Err 52
Internal hardware error
Replace the power control board
Err 53
Internal hardware error
Replace the power control board
Err 54
Flame is detected in a state in
which no flame is allowed to
be seen.
Replace the power control board
Err 55
Low water pressure error
Check pressure sensor
Replace the pressure sensor
Err 56
Low water pressure error
Check pressure sensor
Replace the pressure sensor
Err 57
Low water pressure error
Check pressure sensor
Replace the pressure sensor
Err 58
Low water pressure error
Check pressure sensor
Replace the pressure sensor
Err 59
Low water pressure error
(this error will stops all modules)
a - Check the pressure into the water system and eventually
increase it
a - If water system pressure is over parameter 3022, replace the water
pressure sensor
Err 60
High flue gas temperature error a - Check if return temperature is higher than 145°F (62°C)
at high fire;
b - Check the combustion efficiency of the burner in fail.
Combustion Efficiency must be higher than 88%;
c - Check the flue gas temperature sensor match section
17.10.
a - If return temperature is higher than 145°F (62°C) downrate the
capacity or reduce the water flow;
b - If combustion efficiency is lower than 88%, try to clean the flue gas
side and the water side of the heat exchanger;
c - If flue temperature sensor do not match section 17.10, it must be
replaced.
Err 61
Return temperature is higher
than 176°F (80°C)
a - Check if temperature sensor match section 17.10
b - Check if supply and return pipe are reversed
If temperature sensor do not match section 17.10, it must be replaced.
Err 62
Block drain switch is active
(this error will stops all modules)
a - Check if the condensate drain is blocked
b - Check if the condensate box is blocked
a - Remove any obstruction from the condensate drain
b - check the condensate box, if medium is exhaust it must be replaced
Err 64
No correct Frequency signal or
no correct ground connection or
no communication with the WD
a - Check the frequency signal. It must be between 55 and
65Hz
b - Check the ground connection (between ground and
neutral it must be 0 volt)
a - If out of range, ask your electrical supplier.
b - If the ground connection is not right ask to your electrical supplier
Diversely try to replace the power contro board
Err 65
Hot neutral reversed
Check supply voltage polarity
Reverse supply voltage polarity, if it’s the case
Err 66
Net freq. error detected in the
main
Check the frequency signal. It must be between 55 and
65Hz
If out from range, ask your electrical supplier. Diversely try to replace
the power contro board
Err 67
Faulty earth connection
Check the earth connection to the appliance
Repristinate the earth connection
Err 68
Watchdog communication error
Replace the power control board
Err 72
Supply sensor open
Exchanger malfunction
Check if temperature sensor match section 17.10
Check that the primary heat exchanger temperature fuse
has not intervened.
If temperature sensor do not match section 17.10, it must be replaced.
If the primary heat exchanger temperature fuse has intervened (the
contact is open), the exchanger must be replaced
Err 73
Return sensor open
Check if temperature sensor match section 17.10
If temperature sensor do not match section 17.10, it must be replaced.
Err 76
DHW sensor open
Check if temperature sensor match section 17.10
If temperature sensor do not match section 17.10, it must be replaced.
Err 80
Supply sensor shorted
Check if temperature sensor match section 17.10
If temperature sensor do not match section 17.10, it must be replaced.
Err 81
Return sensor shorted
Check if temperature sensor match section 17.10
If temperature sensor do not match section 17.10, it must be replaced.
Err 84
DHW sensor shorted
Check if temperature sensor match section 17.10
If temperature sensor do not match section 17.10, it must be replaced.
Summary of Contents for Esteem 399
Page 3: ...3 SAFETY INSTRUCTIONS ...
Page 5: ...5 SAFETY INSTRUCTIONS ...
Page 112: ...112 17 MAINTENANCE ...
Page 116: ...116 19 SPARE PARTS Spare parts ...
Page 135: ......