Econar GeoSource Invision 3 Q Series Installation And Operating Instructions Manual page 20

Thermostat
Check
for
loose or broken
wires
at
compressor, capacitor, or contactor,
Wiring
Replace fuse or reset
circuit breaker.
(Check
for correct
size
fuse
!t
ctrcu4
llgakgl)
Blown
Fuse
High or Low
Pressure
Controls The unit could be
off
on the
high or low-pressure cutout
control.
Check water GPM, air CFM
and
filter,
ambient temperature and loss
of refrigerant.
If
the unit
still fails to
run, check
for faulty pressure
controls individually. Replace
if
defective.
Check capacitor,
if
defective remove, replace and
rewire correctly.
Defective Capacitor
Voltage Supply
t ow
If
voltage is below minimum voltage specified on the data
plate, contact local power company. Check
voltage
at
compressor for
possible open
terminal.
Low
Voltage
Circuit Check transformer and fuse
for bum out or voltage
less
that
I
8
volts. With
a
voltmeter, check signal
from
thermostat at
Y
to X,
Ml
on
controller to X,
check
for 24 volts
across
the compressor contactor.
Replace component that
does
not energize.
Compressor Overload Open
ln all
cases
an "internal" compressor overload is
used. If
the compressor
motor is too hot, the overload
will
not reset
until the compressor cools down.
Internal winding grounded to the compressor shell. Replace the
compressor.
If
compressor
burnout.
replace
inline
filter
drier.
Compressor
Motor
Grounded
Check
continuity of
the compressor
windings
with
an
ohmmeter.
lf
the
windings
are open, replace the
compressof.
Compressor
Windings
Open
Try
an
auxiliary
capacitor
in parallel with
the run capacitor momentarily.
ff
the compressor
still
does
not
start. replace
it.
Blower motor
runs
but
compressor
does
not, or
compressor
short cycles.
Seized Compressor
Improoerlv
located thermostat (e.g. near kitchen, inaccurately
sensing the
comfort level in
living
areas).
Thermostat
Loose
wiring
connections,
or control contactor defective.
Wiring
and
Controls
Unit
short
cycles
Compressor Overload Engaging Compressor overload
works
on
high temperature.
A
compressor
running
hot may be due
to lack
of
refrigerant charge or faulty high-pressure
lockout.
Water Lack of sufficient
pressure,
temperatue or quantity of
water.
Recalculate heat gains or
losses
for
space
to
be
conditioned.
If
excessive,
rectify by
adding
insulation,
shading, etc.
Unit
undersized
Air
leaks in ductwork Check
for
leaks
in ductwork
or
introduction of ambient air
through doors/windows
Thermostat
Improperly
located thermostat (e.g. near kitchen, not sensing the comfon level
in living
areas). Check
anticipator setting.
Aidlow
Refriserant Charse
Low
on
refrigerant charge causing
inefficient operation. Adiust only
after checking
CFM
and
GPM.
Reversing
Valve Defective reversing valve creating bypass of refrigerant from discharge to suction
side
of
compressor.
When
it
is necessary
to
replace the
reversing valve, wrap
it
with
a
wet cloth
and
direct the heat away.
Excessive heat
can
damage the valve.
Insufficient
cooling or
heating.
Desuperheater The desuperheater
circuit (in-line fuse)
should be disconnected
during cold
weather to allow
full
heating
load
to
house.
Reversing valve
does
not shift
Defective
solenoid
valve
will
not energize. Replace solenoid coil.
Unit
does
not
cool
(Heats
Onlv)
Reversing valve
does
not shift,
the valve
is
stuck
The solenoid valve is
de-energized due
to miswiring
at the
unit
ff
thermostat-correct
wiring.
Replace
if
valve
is
tight
or
frozen
and
will
not
move. Switch from
heating
to cooling
a
few
times to loosen valve.
Diny
Air
Filter
Check
filter.
Clean or replace
iffound
dirty.
Aidlow
Lack of adequate
airflow
or improper distribution of
air.
Check the
motor
speed and
duct sizing.
Check
the
filter,
it
should
be
inspected every month and changed
if dirty.
Check
for
closed
registers.
Remove
or
add resistance
accordingly.
Blower
speed set to
low
Low
air
temperature
Evaporator (air
coil)
ices over
in cooling
mode.
Move
jumper
to the next highest
speed setting.
Room temperatures
below
65"F may ice over the evaporator.
Unit
not level Level vertical
units.
Water drips
from unit.
Condensate drain line kinked or
plugged
Clean condensate
drain.
Make
sure external condensate
&nin
i5
ilstallsd with
adequate drop and
pitch.
Compressors Make
sure
tle
compressors
are
not
in direct
contact
with
the
base
or
sides
of
the
cabinet. Liquid
slugging or high-pressure operation
creates noise.
Blower
and
blower motor
Blower wheel
hitting
the casing, adjust for
clearance and alignment. Bent blower,
check
and
replace
if
damaged.
Loose
blower
wheel on shaft, check and tighten.
Contactors
Check
for low
supply voltage, low transformer
output, or
ffansformer
tap setting.
lf
the contactor
noise
in
the contactor
could
be
to control voltage
less than
18
volts.
or
or
corroded or coil
contacts
are or
Rattles
and
Vibrations
Check
for
loose screws, panels, or internal components.
Copper
could be
hitting
the metal
surfaces. Carefully
readiust by bending slightly.
Water
and
Airborne
Noises
DHW/Desuperheater Plumbing
Certain
piping configurations
can cause
a
resonadng
sound
in
remote locations thoughout
the
Fastening the
piping
more sequrely, vibration
absorbing fiftings,
or
replumbing
may be necessary
Noisy
Operation
Cavitating Pumps
Purge air
from
closed
loop
system.
and
Lack of
adequate
airflow
or
improper distribution of
air.
Check the motor
speed and
duct
the
filter,
it
should be
inspected every month and changed
if dirty.
Remove or add resistance
ductwork
will
cause
high airflow velocities
noisy operation.
Excessive water through
the water coil
will
cause a
squealing sound. Check the
l8
but
the noise.
water
flow,
ensuring
adequate
flow for
good
PROBLSIW
PASSIBI,E
C,A.I]SE
Check settins.
calibratior
f