PENSOTTI PNCC-32N, Instruction Manual

Page: 73 / 81

MAINTENANCE INSTRUCTIONS
70
6.8 Troubleshooting -
To display the last 5 errors, keep pressed the ‘ ’ INFO button, in OFF mode position, for 5
seconds. The errors number will appear in chronological order (-1-
= first fault… -5- = last fault)
. U
se ‘ ’ and ‘ ’ buttons of
Heating Temperature setting, to scroll the list of saved errors.
To reset the errors list press the‘ ’ RESET button. Press the
‘ ’ INFO button to exit the errors display mode.
ERROR
CODE
PROBLEM POSSIBLE CAUSE REMEDY RESET
E01
IONISATION
PROBLEM
WITHOUT FLAME IGNITION
a. NO GAS.
b. IGNITION ELECTRODE BROKEN OR
EARTHED.
c. GAS VALVE MALFUNCTION.
d. MECHANICAL MINIMUM
ADJUSTMENT (ON GAS VALVE) SET
TOO LOW OR IGNITION SEQUENCE
SET TOO LOW.
e. GAS VALVE INLET PRESSURE TOO
HIGH (FOR LPG BOILERS ONLY ).
WITH FLAME IGNITION
f. IONISATION ELECTRODE
MALFUNCTION.
g. IONISATION ELECTRODE CABLE
DISCONNECTED.
a. CHECK GAS SUPPLY.
b. REPLACE PART.
c. REPLACE PART.
d. REGULATE
MECHANICAL MINIMUM
OR SLOW IGNITION.
e. CHECK THE MAXIMUM
PRESSURE SETTING.
f. REPLACE PART.
g. CONNECT THE
IONISATION
ELECTRODE CABLE.
Manual Reset
(press the ‘ ’
Reset button)
E02
SAFETY
THERMOSTAT
TRIPPED
h. THERMOSTAT MALFUNCTION OR
OUT OF CALIBRATION.
i. THERMOSTAT CABLE
DISCONNECTED.
h. REPLACE PART.
i. CHECK THE WIRING.
Manual Reset
(press the ‘ ’
Reset button)
E03
AIR PRESSURE
SWITCH
j. SWITCH OUT OF ORDER.
k. INLET OR OUTLET FLUE PIPES
OBSTRUCTED.
l. SWITCH CABLE NOT STABLE.
j. REPLACE PART.
k. CHECK FLUE PIPES
l. CHECK CABLE.
Manual Reset
(press the ‘ ’
Reset button)
E04
NO WATER IN THE
SYSTEM
m. INSUFFICIENT WATER PRESSURE IN
THE SYSTEM (OPENS
ELECTRICALLY AT 7.2 psi).
n. WATER PRESSURE SWITCH CABLE
DISCONNECTED.
o. WATER PRESSURE SWITCH
MALFUNCTION.
m. FILL THE SYSTEM.
n. CHECK THE WIRING.
o. REPLACE PART.
Automatic
E05 HEATING SENSOR
p. SENSOR MALFUNCTION OR OUT OF
CALIBRATION (RESISTANCE VALUE
10 kOhms AT 77°F).
q. SENSOR CABLE DISCONNECTED OR
WET.
p. REPLACE PART.
q. CHECK THE POWER
SUPPLY CONNECTION;
Automatic
E06 D.H.W. SENSOR
r. SENSOR MALFUNCTION OR
INCORRECT (RESISTANCE VALUE 10
kOhms AT 77°F).
s. SENSOR CABLE DISCONNECTED OR
WET.
r. REPLACE PART.
s. CHECK THE POWER
SUPPLY CONNECTION .
Automatic
E17 MODULATOR
t. GAS VALVE MODULATOR OUT OF
ORDER
t. REPLACE PART.
Manual Reset
(Switch off the
power supply)
E18
INADEQUATE
CIRCULATION
u. PRIMARY OR SECONDARY HEAT
EXCHANGER OBSTRUCTED.
v. PUMP MALFUNCTION OR PUMP
IMPELLER DIRTY.
u. CLEAN OR REPLACE
PART.
v. CLEAN OR REPLACE
PART.
Manual Reset
(Switch off the
power supply)