ADC AD-26, WDA-540, AD-295, AD-540 Phase 5 Coin System Diagnostics, Diagnostic L.E.D. Failure Codes

SECTIONVIII

PHASE 5 COIN SYSTEM DIAGNOSTICS

ALL major circuits, including door, microprocessor temperature sensor, heat and motor circuits are monitored. The Phase 5 coin microprocessor controller (computer) will inform the user via the light emitting diode (L.E.D.) display of certain failure codes along with indicators both in the L.E.D. display and at the outputs of each relay (and door switch circuit) to easily identify failures.

A. DIAGNOSTIC (L.E.D.) FAILURE CODES

1.“door” - Indicates door switch circuit is open.

a.Keyboard (touch pad) entry was made while main door is open or

b.there is a fault in the door switch circuit (external of the microprocessor controller [computer]).

2.“dSFL” - Indicates a fault in the microprocessor temperature sensor circuit. If a fault is detected in the microprocessor heat sensor circuit, the L.E.D. display will read “dSFL” and the buzzer (tone) will sound for approximately 5-seconds every 30-seconds.

a.the problem is corrected

or

b. power to dryer is discontinued...and the problem is then corrected.

IMPORTANT: The Phase 5 coin microprocessor controller (computer) has its own internal heat sensing circuit fuse protection located on the back side of the (computer). If a “dSFL” condition occurs, check to see if this fuse has blown. If it has, DO NOT replace the entire microprocessor controller (computer); replace only the fuse and do so only with a 1/8-Amp (Slo-Blo) type fuse.

NOTE: Once the Phase 5 coin microprocessor controller (computer) detects a problem in the heat circuit, it updates every 30-seconds so if a problem was a loose connection in this circuit, which corrected itself, the “dSFL” condition would automatically be cancelled.

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