Cantherm EC20 Manual - Página 9
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Imprimir páginaHeater
ignites,
Causes:
1. Photocell is
dirty,
2,
Contol
board is
3. Fuel
pump
4.
Fuel fitter dirty.
Solutions:
1, Photocell
is dirty,
with
a
soft,
dry
doth,
eiher
replace
the
2.
Confol
board
is
bustion flame has
3.
Fuel
pump is
pressure
wih
a
4.
Fuel
filter
dirty.
Heater
ignites,
Causes:
1,
Fuelpump
is
2.
Solenoid valve is
3.Overieat
4.
Duc{ing is
5. Venting
is
6.
Nozle
is
dirty.
7.
Fuel
filter
is dirty.
8.
Gonbol
boad
is
9.
Fuel contains
Solulions:
1.
Fuel pump is
pressure
with
a
2. Solenoid
valve is
and the
solenoid
3. Overheat
sure
ohms
of
probes
on
fie
tvro
Remember
that
if
heat enough to
shut
4.
Ducting's
regarding
maximum
and
shuthe
heater
les;
than one minute and shuts
doum
igned
or defective.
ive.
igned
or defective.
Check
that
0re
photocell
'rs
aimed conecUy
and
is
free of dirt. lf necessary,
clean the photocell "eye"
rtunately
no
test exists
for
the
photocell.
Aftempting to
lumper
out"
the photocell will
not
test
the function. You
must
ill or bonow a
knorvn
functioning
photocell
from an
identical heater.
ive.
lf the
heate/s
spray
and
spark are
conect
the
photocell
and control board must work together to rectgnize the com-
:
established.
Therebre
if
a new
photocell
does
not
conect this symptom, the control board
is defective,
lf
the fuel pump will not achieve or maintain pmper
o@ut
pressure, the fuel pump
is defec'tive, Check the pump's
ouQut
the intemal and extemal
fuel
flters
and clean or
replace
as needed.
eral
minutes. then shuts down
tive.
is defective,
ve.
contaminants.
lf
the fuel pump will not achieve or maintain
proper
ouput
pressure, the pump is defective.
Check the fuel pump
output
[ve.
Use a
multi-meter
set
to measure voltage.
Check
for
proper
voltage
at
tre
solenoid valve.
lf proper voltage
is
read
wi
I
not stay
open and allow fuel
spnay,
the
solenoid valve
is defective.
is
defective. Also called
a safety
trermostat or
limit
switch.
Some heaters are equipped with this. Set
a multi-meter
lo
mea
Perform
this
test
immediately
after
the
heater
shub
down
and
the
overtreat
trermostat
is
still
hot. Place
he
multi-meter
trrrminals of
the safety
thermosht
lf
tre
multimeter
reads infinity (no continuity) the
safety
thermostat is
defective.
ter is
over firing due to high pump
pressure,
wom
nozzle,
or is improperly ducted or vented, the safe$ lhermostat
will
I
eater 0fi.
Al
rvays
follow
fte
manufacfure/s recommendations
length and
diameter.
Failure
to do so
can
result in
heat
building up in the heater until
the
safe$
thermostat contiacts open