Fagor LVC-21W, Service Manual

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13
SYMPTOM POSSIBLE CAUSE ACTION
Timer faulty (M) Verify the programmer is rotating (M1,
M2, M3). If not, check to see that the
motor is receiving power. If so, replace
the programmer assembly. Ohm out timer
motor leads.
Faulty rinse valve (V1) Verify the wiring and voltage received; if
correct, ohm out. If open replace valve.
Glasswasher RUNS
continuously in the wash
cycle or not rinsing.
No water to machine. Verify hose is not blocked or kinked,
water valve is open and pressure > 20PSI.
Clogged or obstructed
rinse arms Remove and clean rinse arms/nozzles.
Poor water pressure Verify the inlet water pressure is at a min
of 15 psi and max 25 psi.
Hose strainer is clogged Check strainer or any filters installed.
Glasswasher FILLS
slowly and/or rinse is
weak.
Bad fill valve (V) Valve can be clogged or lazy, causing
poor flow.
Temperature gauge in
front panel is defective. Check temperature with a calibrated
thermometer. Replace temperature gauge
if necessary.
Misadjusted/faulty
thermostat (Tc) Verify operation and setting of
thermostat; replace if necessary. If
thermostat is not receiving voltage, check
wiring or replace selector switch (IG)
Faulty high limit stat (Tl) Reset thermostat, depressing red button.
Replace if necessary.
Faulty heater relay (Cc) Ohm out booster relay, closed when
solenoid receiving voltage. If not replace.
Rinse heater (Rc) faulty Ohm out element check for continuity; if
open, replace heater.
Glasswasher RUNS.
RINSE WATER NOT
REACHING
REQUIRED
TEMPERATURE.
Bad selector switch (IG) Verify voltage between positions (6/6a)
(Pk/r); replace if no voltage.
Wrong incoming water
and pressure going to the
machine. Check out that incoming water
temperature and pressure are the
optimums indicated on the data plate.
Faulty operation t-stat (Tc) Verify position change to tank t-stat (Tt);
replace if necessary.
Misadjusted/faulty
thermostat (Tt) Verify voltage to t-stat and position
change from booster to tank.
Tank heater relay (Ct)
faulty. Verify contacts are close when there is
voltage to relay also check for stuck or
pitted contacts.
Glasswasher RUNS.
WASH WATER NOT
REACHING
REQUIRED
TEMPERATURE.
Rinse heater (Rt) faulty Check element for continuity; if open,
replace heater.