Fagor CO-500, Service Manual

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22/07/2019
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SERVICE MANUAL
EVO FRONT LOADING DISHWASHER
PT2 :
Tank minimum operating level
On completion of the wash process, the water is drained off until this level is reached.
PT3 :
Tank maximum operating level.
Operating start level. When filling with water for the first time, this level is reached.
PT4 :
Tank maximum safety level (the level must be detected for at least 2 seconds).
Safety level, not operating level.
If this level is detected, the machine is completely disabled, error 11 is displayed and the water is drained until
reaching the level PT3
PC-HIGH :
Maximum boiler level.
When this level is detected, the VC is automatically deactivated.
PC-LOW :
Minimum boiler level.
When this level is detected, the VC is activated to fill the boiler with water up to PC-HIGH.
o
VC acts when in the boiler the water level (PC<PC-LOW) is requested, except in the tank fill or rinse process
with BA (VC=0 if BA=1).
o
The heating and boiler temperature control is performed with a hysteresis of 2 ºC:
If X ºC is the temperature defined in the boiler TC :
•
If TC <(X-1), CC operates.
• If TC >(X+1), CC does not operate.
• If (X-1)<TC<(X+1).
o CC operates, if the machine is in the heating stage
o CC does not operate, if the machine is in the cooling stage.
The value X used, depends on the operating state of the appliance, and may take the following values:
o Stand-by mode: 5 ºC less than the set temperature.
o Energy saving mode: 10 ºC less than the set temperature.
o Wash programme running: configurable range (70 ºC ÷ 90 ºC).
o The boiler resistor operates if the temperature programmed in the boiler falls below the set level and if the
water level in the boiler is OK (PC>PC-LOW).
o The boiler resistor does not operate in the following cases:
• Machine off.
•
Boiler empty or minimum water level in boiler (PC<PC-LOW) not reached.
•
During the rinse or tank filling process (CC=O if BA=1).
•
During the automatic drainage process and the drainage programme with self-cleaning.

In the event of a probe error (see table of errors).
o The tank resistor operates if the level condition in the tank is met (PT>PT1) and if the temperature in the
tank is less than that programmed (TT<programmed wash temp).
o The heating and tank temperature control is performed with a hysteresis of 2 ºC, and therefore it follows
this algorithm:
If X ºC is the temperature defined in the tank (TT):
• If TT<(X-1), CT operates.
• If TT>(X+1), CT does not operate.
•
If (X-1)<TT<(X+1).

CT operates, if the machine is in the heating stage.

CT does not operate, if the machine is in the cooling stage.
The value X used, depends on the operating state of the appliance, and may take the following values:
o
Stand-by mode: Same value as the set temperature.
o
Energy saving mode: 5 ºC less than the set temperature.
o
Wash programme running: configurable range (55 ºC – 71 ºC). Default setting: 60 ºC.