Aerco Esteem 399, Installation And Maintenance Instructions Manual

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89
16 - USE
16.13 - Diagnostic:
Lockouts “Loc”
To RESET a lockout on units model
199 and 250, simply press RESET
key.
On multi-burner unit models 399
and 500, when the heater goes into
lockout state you’ll see
icon and
the corresponding burner icon (

or
‚
) if failing, will blink. To reset
the lockout press the RESET key,
the display will show the Lockout
number, you can try to reset the
lockout by pushing the RESET key
again. Press and hold the RESET key
for 5 seconds to go back into normal
display condition.
Continue
Loc Description Checks Solutions
Loc 1 No flame detected after five
ignition attempts.
a-correct gas supply pressure (see section 15.7);
b-ignition spark (see section 17.4);
c-correct amount of gas (see sections 15.7 and 15.8);
d-120Vac at the gas valve;
e-resistance of the two gas valve coils should be 0.18 kohm
and 1.1 kohm;
f- If the burner lights, but goes out at the end of the ignition
attempt, check: that the ionization current is set at a value
greater than 4uA (follow procedure in section 17.1.10)
a-If the gas supply pressure is incorrect, it must be adjusted to the
correct pressure;
b-If spark is not present, check for correct ignition electrode position
and gap as per section 17.4; If position is correct, check for 120Vac
at the supply of the spark generator.
c-inspect the vent system and eliminate any obstructions;
d-if the voltage to the gas valve is not 120Vac the power control board
must be replaced;
e-if the resitance of the gas valve coils is not 0.18 kohm and/or 1.10
kohm, the gas valve must be replaced.
f-If the ionization current is not greater than 4uA, confirm that the CO2
content is adjusted properly (see section 15.8). Check the flame
detection electrode (section 17.4) and if necessary replace it, check
the integrity of the flame detection electrode electrical wires.
Loc 2 Gas valve not supplied before
try to ignition
(when this error happens to
burner 1 (Master), stops other
burner)
a - Check High limit temperature switch
b - Check High limit flue temperature fuse
WARNING!!!
If the high limit
temperature fuse melt, before any replacement, it is
mandatory to contact the appliance manufacturer
to prevent any permanent damages to the heat
exchanger. Failure to comply with this requirement
can result in excessive levels of carbon monoxide
which can result in severe personal injury or death!
Loc 3 Gas valve lost cable connection
during fire
a - Check the integrity of the wires connections between gas
valve and control board
a - If wires are interrupted, replace the wires
b - If wires are ok try to replace the gas valve or the power control
board
Loc 4 Gas valve relay not closing a - Check the integrity of the wires connections between gas
valve and control board
a - If wires are interrupted, replace the wires
b - If wires are ok try to replace the gas valve or the power control board
Loc 5 Gas valve circuit
(when this error happens to
burner 1 (Master), stops other
burner)
a - Check High limit temperature switch
b - Check High limit flue temperature fuse
WARNING!!!
If the high limit
temperature fuse melt, before any replacement, it is
mandatory to contact the appliance manufacturer
to prevent any permanent damages to the heat
exchanger. Failure to comply with this requirement
can result in excessive levels of carbon monoxide
which can result in severe personal injury or death!
Loc 6 Safety relay open error Replace the power control board
Loc 7 Safety relay closed error Replace the power control board
Loc 11 Blocking error over 20 hr Press RESET button to see the Blocking error reference and
proceed follow it
Loc 12 Fan error a - Check for 120Vac power connection of the fan
b - Check PWM connection of the fan
a - If no 120Vac is present replace the power control board
b - If no PWM signal, replace power control board
c - Try to replace the fan
Loc 13 Internal software error Replace the power control board
Loc 14 Internal software error Replace the power control board
Loc 15 Internal software error Replace the power control board
Loc 16 Internal software error Replace the power control board
Loc 17 Internal software error Replace the power control board