AT-OS S.r.l.
Viale del Lavoro, 19 37030 Colognola ai Colli (Verona) Italy
Tel. ++39 045 6159411- Fax ++39 045 6159422 - e-mail: [email protected] – www.at-os.com
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Check if the detergent pump supply connector (CN13) is properly inserted in the motherboard and that there
are no uncovered wires causing a short circuit.
Check if the connectors connected to the pump are firmly inserted and that there are no uncovered wires
causing a short circuit.
Replace the pump if its connections are all OK.
E51: Mos Solvent Pump
An electrical problem has arisen (short circuit) on the power supply to the solvent pump.
Check if the solvent pump supply connector (CN13) is properly inserted in the motherboard and that there
are no uncovered wires causing a short circuit.
Check if the connectors connected to the pump are firmly inserted and that there are no uncovered wires
causing a short circuit.
Replace the pump if its connections are all OK.
E52: Mos Softener Pump
An electrical problem has arisen (short circuit) on the power supply to the softener pump.
Check if the softener pump supply connector (CN13) is properly inserted in the motherboard and that there
are no uncovered wires causing a short circuit.
Check if the connectors connected to the pump are firmly inserted and that there are no uncovered wires
causing a short circuit.
Replace the pump if its connections are all OK.
E53: Mos cycle Start
An electrical problem has arisen in the "cycle start" safety control. This control gives consent for operation
by the elements controlled by the power board.
Check if CN13 connector is properly inserted in the motherboard and if there are no uncovered wires causing
a short circuit;
Check if CN8 connector is properly inserted in the motherboard and if there are no uncovered wires causing
a short circuit;
If the problem persists you must replace power board CS0226xx (see instructions in paragraph 6.11.4)
E54: Mos Sol.Valve 1
An electrical problem has arisen with solenoid valve EV1, probably a short circuit.
Check if CN9 connector is properly inserted in the motherboard and if there are no uncovered wires causing
a short circuit;
Check if the solenoid valve coil is sound and is not "burnt". Replace the solenoid valve if this is the case
(refer to the instructions in 6.2.2).
E55: Mos Sol.Valve 2
An electrical problem has arisen with solenoid valve EV2, probably a short circuit.
Check if CN9 connector is properly inserted in the motherboard and if there are no uncovered wires causing
a short circuit;
Check if the solenoid valve coil is sound and is not "burnt". Replace the solenoid valve if this is the case
(refer to the instructions in 6.2.1).
E56: Mos Sol.Valve 3
An electrical problem has arisen with solenoid valve EV3, probably a short circuit.
Check if CN9 connector is properly inserted in the motherboard and if there are no uncovered wires causing
a short circuit;
Check if the solenoid valve coil is sound and is not "burnt". Replace the solenoid valve if this is the case
(refer to the instructions in 6.2.1).
E57: Mos Sol.Valve 4
Summary of Contents for AF2 C Series
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