Input Modifications Defined | Maytag 16010061 instruction

INPUT MODIFICATIONS DEFINED

PRESSURE SWITCH INPUT

The pressure switch is a two level pressure switch. (Figure 4-2)The low level contacts provide a path for a 24 VDC sensing circuit, the high level contacts provide an electrical path for 110 VAC to the water valve relays on the board. Another sensor on the board monitors the high level circuit to determine when the high level is reached and the circuit is opened. Thus, shutting off the water valve relays.

During wash fill, the low level of the pressure switch is sensed with 24 VDC and provides an indication to the control board the water level has satisfied the low level. Once satisfied, the 24 VDC circuit is opened. The board then opens the water valve relays and shuts off the water valves.

During rinse fill, the high level provides an indication to the machine control as to whether the high water level has been reached. When the water level switch is satisfied, the pressure switch circuit is opened and power for the water valves is no longer passed through the machine control.


			Figure 2
TEMPERATURE SENSOR INPUT			DOOR LOCK SWITCH INPUT
A thermistor is located in the water valve			When input is present, this is indication
to monitor the blended incoming water			the washer door is locked. The machine
temperature. The machine control uses			controller will not command the spinner
this input signal to regulate the water			to tumble or spin when the door lock
temperature with the warm or cold wash			input is not present.
and warm rinse temperature selections
(See Water Valve Outputs).			If the door is opened during a cycle,
On the MAH7500 model, another			the control will pause the cycle on the
			MAH5500B.
thermistor is located on the heater
assembly. The machine control board
uses this input signal to maintain the
water temperature in the sump area of
the outer tub, by cycling the heater on/
off.				2-4
16010486 (16008373-05)			Section 2. Washer Controls Overview

Revised 02/01		©2001 Maytag Appliances Sales Company

Image 116

Maytag 16010061 Input Modifications Defined, Pressure Switch Input, Temperature Sensor Input Door Lock Switch Input

Contents

Washer Safety Precautions Introduction MAH3000 N T E N T S General Section Iii Motor General Information Installation Grounding Polarity Checks Specifications Washer Controls Input Definitions Series 17 & Later Water Valve Outputs Output Definitions Torque Output Cycle Sequence Definitions Miscellaneous Push-To-Start Relay Operation Cycle Review General Component Exploded View Electrical Components & Testing Electrical Test Equipment O u n d e d C o m p o n e n t s Timer & Console Switches Key 0 = Input Signal Not Asserted Machine Control C HIN E FU N Ctio N N T R O L L T a GE IM ER A R D Drive Motor Motor & Motor Control Test Disconnect power to the washer prior to testing Motor Windings Check Tachometer Circuit Diagnostics Unbalance Control System Tub Displacement Switch Inertial Unbalance Switch Maytag Corporation Troubleshooting Shuts OFF When Push-To-Start Button Re- leased Temperature Inputs Door Leaks Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting Troubleshooting 3 1 Troubleshooting Facia. Press Timer knob onto the timer Shaft Washer Wattages Miscellaneous InformationEnergy Usage Console M O V a L Vertical Switches Push Button Timer Removal Maytag Corporation Cabinet Assembly Door Assembly & Hinges Cabinet Vibration Absorber Front Panel TOP Cover Door Lock Mechanism Front Shroud Assembly Troubleshooting Access Panel Hinge Removal Maytag Corporation WATER-CARRYING Components Water Valve Water Level Pressure Switch AIR Dome Hose Dispenser Assembly REPLACEMENT/ROUTING Pump Assembly Front Water Flume Injector Pump Accessory Kit Reverse the previous steps for replacement Drain Hose Maytag Corporation Door Boot Baffles Replacement Outer TUB Cover Spin Basket Assembly w/BALANCE Ring Drive Pulley Profile Washer Spinner Support Locking Nut Spinner TUB Support Seal System Bearings Outer TUB AssemblyCounter Weights Strut Assembly Inertial Unbalance Switch TUB Displacement Switch Outer Tub Switch Maytag Corporation Motor Drive System M O V a L Machine Control Motor Control Motor Drive Sysytem Electrical Schematics & Timer I N F O R M a T I O N Timer Chart Prior to Series Electrical Schematic Series Timer Chart Series Electrical Schematic Series Timer Chart Series Electrical Schematic Series T E S Contents Introduction MAH4000/MAH5500A Control Facia Specifications Electrical Series 10 MAH4000 only Series 11 & Later Basic Machine OperationWasher Controls Overview Cycle Review Cycle Times General overview of Stain Cycle Suds detection during stain cycle General Component Exploded View TERMINAL/WIRE Electrical Information Water Carrying Components Disconnect power and water to the machine Operation Removal Disconnect power and water to the washer See -11 16010199 Revised 7/00 Maytag Appliances Sales Company Wiring Information Series 10 Schematic MAH4000 only Series 11 MAH4000 and MAH5500 Series 10 Timer Chart MAH4000 Series 11 Timer Chart MAH4000 & MAH5500A Maytag 16008373-05 Models covered in this manual supplement MAH5500B MAH7500A 16010486 Revised 02/01 Maytag Appliances Sales Company MAH5500B Control Facia MAH7500 Control Facia SpecificationsGeneral Information General Flow Of a Complete Wash Cycle Cycle Sequences Wash Time Tumble Wash Selections Tumbling TimeRinse Tumble Times Number of Rinses Input Water Temperature Option SelectedON/OFF Sequence of Pump During Spin Cycle Spin Speed Drain Pump Features of MAH5500B LED Washer Basic Control Board Philosophy for Both Washers User Interface Display Characteristics Options Mode Input Modifications Defined Pressure Switch InputTemperature Sensor Input Door Lock Switch Input Output Modifications Defined START/PAUSE InputTach Input Door LOCK/UNLOCK Solenoid Output Water Valve Outputs Main Wash Target TemperaturesCycle Sequence Definitions Suds Detection Bleach DispenseRedistribution Door Lock Operation MiscellaneousDoor Lock Philosophy Power LOSS/FAILURE Special FeaturesAdvertising Mode MAH7500A LCD Washer Service ModeLED Washer Service Mode Table LED WasherSpecial Tests Fast Time Down Test Quick Service Cycle Accessing The Help Codes Board Input TestHelp Codes Board Output Test Accessing Diagnostic Codes Clearing Diagnostic Code ListNumber of Cycles Since Code Assigned Clearing the Help Codes Accessing Service Mode Service TestsLCD Washer User Interface Tests Service Cycle During a cycle Detection System Check DIAGNOSTIC/HELP CodesExit diagnostic/help codes Return to DIAGNOSTIC/HELP Code Tables Help Codes Listing Help Description Trigger Action to be Taken Help Description Trigger Action to be Taken Diagnostic Codes Listing Diag Description Trigger Action to be Taken Diag Description Trigger Action to be Taken Diag Description Trigger Action to be Taken General Component Exploded View Component Identification & Location Glossary of Terms Page Page Electrical Tests Fabric Softner Bleach Cold Hot Thermistor Coil Water ValveLED Model LCD Model Machine Control Door Lock Mechanism INPUT/OUTPUT Voltages LCD Washer Membrane Pad Checks Drive Motor Motor Control BoardDrip Shield Removal Motor Control Board Removal Motor Phases Motor Drive System TestMachine Control Board Output Test Motor & Motor Control Test Heater Assembly Heater Will Not Turn On Thermistor Temperature Chart Teardown & Wiring Information Console RemovalMicroprocessor Board Removal LCD Model LED Model Door Latch Hoop Cabinet AssemblyConsole Cover Plug Door Lock Mechanism Water System Components Removal Discontinue power and water to the machinePressure Switch Pump Assembly Heater AssemblyReinstallation Removal Thermistor Removal Sump Cover MAH5500B MAH7500 Maytag Appliances Sales Company