Quick Overview Test; Manual Overview Test - Maytag Commercial MHN30PD Manual

FOR SERVICE TECHNICIAN ONLY - DO NOT REMOVE OR DESTROY

QUICK OVERVIEW TEST

This cycle consists of 8 steps. In each step, the washer will
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perform a Control Action as described in the table below. Once
the action is completed, the washer will advance to the next step.
Each step can be differentiated from the others by looking at the
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display indication.
To advance to the next step before a control action is complete,
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press any button except QUICK CYCLE.
To exit the Quick Overview Test at any time, press the QUICK
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CYCLE button.
Step Display Indication
1 Delicates
2 CCU
EEPROM Version
& Knits
3 CCU
Software Version
Delicates & Knits
4 MCU
Software Version
Whites
5 MCU
Hardware Version
Bright
6 UIC
EEPROM Version
Colors
7 UIC
Software Version
Permanent Press
8 Delicates
The drain pump may be running in any of the last 3 steps, depending
on the water level in the washer and position of the pressure switch.
*The washer will drain until pressure switch reaches lowest level
for 10 seconds, then moves to next step.
PART NO. W10340707A
Control Actuators
Action to be Checked
Door locks, drum Door lock system
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turns 1/2 revolution, Child safety routine
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then door unlocks Motor control (MCU)
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and relocks.
Fill by both cold water Cold water inlet valves
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inlet valves (4 liters) #1 and #2
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into BLEACH Pressure switch:
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compartment. Suds Level
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Fill by hot water inlet Hot water inlet valve
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valve to Wash Level Pressure switch:
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into MAIN WASH Wash Level
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compartment.
Drum executes
tumbling at Motor
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wash speed Motor control (MCU)
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(30 sec).
Drain pump is ON. Drain pump
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Pressure switch*
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Drum rotates Motor
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counter-clockwise Motor control (MCU)
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and ramps up. Drain pump on
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Performs unbalance
procedure before and
after spinning. If not
interrupted, the drum
will slow and stop;
after reaching 0 rpm,
the door unlocks and
Step 8 will be skipped.
This Step is only Door unlock
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apparent if Step 7 is
MANUALLY ADVANCED
prior to the drum
reaching 0 rpm
(washer pumps out
if needed). Door
unlocks (washer
returns to flashing
mode).

MANUAL OVERVIEW TEST

Before replacing any system components, perform this
Manual Overview Test.
This cycle consists of 7 steps. In each step, the washer will
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perform a Control Action as described in the table below. Once
the action is completed, the washer will move to the next step.
Check Exit Condition column.
Each step can be differentiated from the others by looking at the
I
display indication.
To move to the next step before a control action is complete,
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press any button except QUICK CYCLE.
To exit the Manual Overview Test at any time, press the QUICK
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CYCLE button.
Step Display Condition
1 Delicates
completion
2 & Knits
button press valves.
or if overfill
level is
detected
3 Colors On button
press or
completion
4 Permanent On button
Press press or
completion
5 Delicates
completion
6 & Knits On button
press or
completion
7 Delicates On button
& Knits press only
after rpm = 0
and door is
unlocked
The drain pump may be running in any of the last 3 steps, depending
on the water level in the washer and position of the pressure switch.
PAGE 11
Exit Control
Action
On Door locks, drum
turns 1/2 revolution,
only then door unlocks
and relocks.
On Filling with both
Drum executes
reversing movement
at wash speed
(10 min.).
Drain pump is on
(4 min.).
On Drain pump is on
(reach Level_sud
only plus 10 sec.).
Drum rotates counter-
clockwise and ramps
up to maximum speed.
Stop motor to 0 rpm.
Door unlocks.
To be
Checked
Door lock system
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Child safety routine
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Cold and Hot Water
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Inlet Valve
Overfill level
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Motor
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Motor Control (MCU)
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Drain Pump
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Drain Pump
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Motor
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Motor Control (MCU)
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Motor
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Motor Control (MCU)
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Door lock system
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