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Haier GE GDT225SGL0BB Technical Service Manual
Haier GE GDT225SGL0BB Technical Service Manual

Haier GE GDT225SGL0BB Technical Service Manual

18" and 24" stainless steel tub ada compliant dishwasher

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Technical Service Guide
July 2018
18" and 24" Stainless Steel Tub
ADA Compliant Dishwasher
GDT225SGL0BB
GDT225SGL0WW
GDT225SSL0SS
GDT226SGL1BB
GDT226SGL1WW
GDT226SSL0SS
GDT226SSL1SS
PDT145SGL0BB
PDT145SGL0WW
PDT145SSL0SS
QDT125SGL0BB
QDT125SGL0WW
QDT125SSL0SS
ZDT165SIL0II
ZDT165SSL0SS
31-9291
Rev. 2 ~ 10/14/2020

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Summary of Contents for Haier GE GDT225SGL0BB

  • Page 1 Technical Service Guide July 2018 18" and 24" Stainless Steel Tub ADA Compliant Dishwasher GDT225SGL0BB GDT225SGL0WW GDT225SSL0SS GDT226SGL1BB GDT226SGL1WW GDT226SSL0SS GDT226SSL1SS PDT145SGL0BB PDT145SGL0WW PDT145SSL0SS QDT125SGL0BB QDT125SGL0WW QDT125SSL0SS ZDT165SIL0II ZDT165SSL0SS 31-9291 Rev. 2 ~ 10/14/2020...
  • Page 2 5. Locate the Warranty page. GE Appliances, a Haier Company Copyright © 2018 All rights reserved. This service guide may not be reproduced in whole or in part in any form without written permission from GE Appliances, a Haier Company. – 2 –...
  • Page 3 GE - 24 Inch Models ......................15 18 Inch - Haier, Profile and Monogram SS Models ..............16 Monogram II Models ......................16 Door - GE 24-Inch, Haier, Profile and Monogram SS Models ..........17 Top Console Cover .......................17 Outer Door Panel ........................17 UI (User Interface) and Console ...................18 Door - Monogram II Model (Custom Door Panel) ..............18...
  • Page 4 Tub and Structure .........................24 Toe Kick Panel(s) ........................24 Junction Box and House Wiring Connection ................24 Leveling Legs ........................24 Tub Gasket ...........................25 Latch System ........................25 Latch System Diagnosis .......................25 Racks ............................26 Electronic Controls ........................27 Main Control (MC) Service LED ...................28 User Interface (UI) ........................28 Electronic Control Diagnostics (Pump Motors) ..............29 Fill System ............................30 Flow Meter ..........................31...
  • Page 5 Circulation Pump and Motor ....................40 Drain System ..........................42 Dry System (Hidden Heater) ......................43 Schematics / Wiring Diagram .......................44 Strip Circuits .........................45 Index .............................46 – 5 –...
  • Page 6 Safety Requirements GE Factory Service Employees are required to use safety glasses with side shields, safety gloves and steel toe shoes for all repairs. Prescription Safety Glasses Brazing Glasses Safety Glasses must be ANSI Z87.1-2003 compliant Plano Type Safety Glasses Cut Resistant Sleeve(s) Electrically Rated Glove and Dyneema®Cut Resistant...
  • Page 7 P D T 1 4 5 S G L 0 W W Brand Exterior Color G: GE SS: Stainless P: Profile Engineering Digit BB: Black Q: Haier 0 - 99 II: Panel Ready Z: Monogram WW: White Configuration Model Year D: Built-In...
  • Page 8 Specifications Electrical Specifications Component Voltage Resistance Watts Amps Circulation Pump 120 VAC 32 Ω 108 W .9 A 13.25 GPM Heater 120 VAC 14 Ω 1000 W 8.3 A Drain Pump 120 VAC 49 Ω 35 W .83 A 5 GPM Main Control 120 VAC / 13.5 &...
  • Page 9 Installation Side Mounting for 18" Models Only This wall area MUST be free of pipes and A = Height wires 24" Underside of 5" 5" counter top to 3" floor Phillips 4" Cabinets Screws square 6" Floor MUST be even plumb with room floor B = Width...
  • Page 10 Operation This section of the guide provides information on Auto Hot Start and Dry System basic information. Auto Hot Start If incoming water temperature is below 80°F, Auto Hot Start is initiated at the beginning of the cycle in an attempt to purge the home water lines of cooler water. Auto Hot Start can add up to 10 minutes to overall cycle time.
  • Page 11 Component Locator Views Bottom View Components and appearances may vary depending on model number. Flood Switch Junction Box Fill Valve Drain Pump Fill Hose to Flow Meter Sump Fill Hose to Circ Pump Inlet Sump Circ Pump Main Control Circ Pump Outlet Drain Loop Hose Upper Spray Drain Hose...
  • Page 12 Left Side / Rear View Top Sprayer Latch Assembly Top Sprayer Hose Balance Spring Main Conduit Fill Air Gap/ Drain Loop Hinge Assembly Drain Hoses Fill Hoses Fill Valve – 12 –...
  • Page 13 Control Board and Connector Locator View The Main Control Board is in the machine compartment, left side behind the fill valve The RJ45 connector location Front Cover Mounting Cover (Continued next page) – 13 –...
  • Page 14 Motors Fuse J703 Heater J705 Pump Motors J812 DC RJ45 J403 Door J202 Power – 14 –...
  • Page 15 There are three different door balance systems. Door spring tension may be adjusted as needed One for GE, Haier and Profile models, one for to any of the tabs located on the side of the tub. Monogram SS model and a third for Monogram integrated or custom door models.
  • Page 16 18 Inch - Haier, Profile and Monogram SS Monogram II Models Models Monogram II models with custom panels have a different spring adjustment system. They feature Haier, Profile and Monogram stainless steel outer a front adjustable spring tension adjustment. A...
  • Page 17 Door - GE 24-Inch, Haier, Profile and Outer Door Panel Monogram SS Models GE, Haier, Profile and Monogram SS door models have the same outer door design even Door design is similar across the brands and though there are 18-inch and 24-inch models with models.
  • Page 18 UI (User Interface) and Console Door - Monogram II Model (Custom Door Panel) All models have the same the UI controls, which are tabbed into the console. There are two The custom outer door panel is provided by the boards, but come as an assembly with the consumer as well as the handle and screws.
  • Page 19 • 24" GE model Console Removal • 18" Haier and Profile and Monogram Place the outer door panel on a firm flat surface Inner Door Removal (From Hinges) (finished side up).
  • Page 20 4. Disconnect springs and cables and remove the inner door (see Inner Door Removal (From Hinges) under Inner Door in this Haier, Profile and Monogram 18-inch model section of the service guide). hinges include a crossbar or stiffener between the hinges. The hinges and bar are a single 5.
  • Page 21 To Remove Hinges from 18 Inch Models Hinges Linkage 1. Remove power to the dishwasher. All 18-inch models use a linkage system to transfer spring tension to the hinge assembly. 2. Remove the outer door panel (see Outer Panel Removal under Outer Door Panel in The door may also be removed more easily by removing the outer door panel, disconnecting this section of the service guide).
  • Page 22 4. The seal assembly will now slide out of the bottom door channel. 18-Inch Haier, GE and Monogram Models The door gasket is comprised by three components available as an assembly. Included with the assembly is a seal, bracket and splash guard.
  • Page 23 Diagnosis Detergent and Rinse Aid Module The detergent module can be diagnosed by The detergent module is mounted to the checking resistance at the module. The outer inner door panel. It uses a 13.5 VDC wax door panel must be removed, 17.3 Ω +/- 10% is motor to trigger both detergent and rinse aid.
  • Page 24 Tub and Structure The Tub and Structure section of this guide will Junction Box and House Wiring cover the toe kick, junction box, racks, leveling, Connection door balance, gaskets, and main control board. The Junction Box is located behind the toe kick Toe Kick Panel(s) on the right-hand side of the dishwasher.
  • Page 25 Tub Gasket Latch System The tub gasket is used to seal the top and two The latch system is comprised by a latch and sides of the door to the tub. The gasket is switch assembly located in the door. The latch pressed fit into the tub.
  • Page 26 The upper rack rollers attach to the rack the same Racks as the lower rack. The tub rollers attach to a bracket which attaches to the tub. Below is an Lower Rack exploded view of the upper rack rollers, rail and tub rollers.
  • Page 27 Electronic Controls 888 and 999 are critical errors and will stop all functions of the dishwasher. These conditions will be displayed in the 7-segment display window. 888 Flash: Will display if no water flow is detected within 10 seconds of start of fill. •...
  • Page 28 Service Mode (can only be entered during Error Mode) • Press and hold the Cycle Select pad for 5 seconds. • Press Cycle Select: Selects/Increments Test • Start: Starts/Stops Test The control will blink the Light LED every few seconds a number of times that corresponds to the load being tested.
  • Page 29 Electronic Control Diagnostics (Pump Motors) If circulation and drain motors do not operate, the motors fuse (located on the main control board) must be checked. If found open while testing for no circulation and drain pump operation, the fuse and bad pump motor must be replaced.
  • Page 30 Fill System This section of the service guide will cover the Fill System components including the fill valve, flow meter and flood switch. The illustration below is the left side of the tub as viewed from the front of the dishwasher. Drain hoses and the drain system will be covered in the Drain System section of this service guide.
  • Page 31 Flow Meter Fill Hoses A water flow meter works by measuring the There are two fill hoses on the dishwasher. The amount of water that passes though the flow first carries water from the valve to the flow meter meter. The most common mechanical types inlet.
  • Page 32 Flood Switch Components The flood switch is comprised of a float which slides on the switch stem and contains a magnet. The switch body has a reed switch inside the Cover Mounting Screws stem which opens and closes depending on water level.
  • Page 33 Sump This section of the service guide will cover the sump, its components and port locations for fill, circulation and drain sections. Top of Sump Filters Lower Spray Arm Support Bottom of Sump Drain Pump Circulation Pump & Motor – 33 –...
  • Page 34 Sump Ports Main Conduit Upper Sprayer Circulation Pump Inlet Fill Inlet Drain Pump High Drain Loop – 34 –...
  • Page 35 Drain Pump Inlet From Sump Circulation Pump Inlet Cover The circulation pump inlet cover prevents air from The Drain port in the sump is located opposite the entering the circulation pump. If removed or circulation port. There are small molded grates found broken, it must be replaced or reinstalled to in the sump to prevent larger debris from entering ensure good cleanability.
  • Page 36 Circulation System This section of the service guide will cover the The upper sprayer hose connects to the sump circulation system, including the upper sprayer, below the main conduit hose. mid spray arm, main conduit, lower spray arm, filtration, turbidity sensor, circulation motor and pump.
  • Page 37 To remove the main conduit, the dishwasher Lower Spray Arm must be removed from its installed position. With the docking cone removed and the hose The lower spray arm clips to the spray arm disconnected from the sump, the conduit may be support.
  • Page 38 Operation Filtration The Turbidity Sensor measures the amount of Filtration components include a glass or large suspended particles of the filtered wash water. particle trap and two filters. The trap is removed The sensor assembly contains a LED transmitter by squeezing in on two tabs and lifting. The which emits light and a receptor (similar to a basket filter is twist-lock;...
  • Page 39 The Thermistor is located inside the turbidity To check the thermistor, access the Main Control sensor. The thermistor monitors water (see Electronic Controls section in this service temperature in the tub. If the thermistor opens or guide), check resistance on turbidity sensor, pins shorts it will cause an error (see Consumer Error 1 through 4 (see below).
  • Page 40 Sump Removal Circulation Pump and Motor 1. The dishwasher must be removed to remove The circulation pump and motor is connected to the sump. Disconnect power and prepare the the sump with an inlet and outlet hose. There is dishwasher for removal. also a grommet used as a hanger to dampen any vibration noises.
  • Page 41 Shown below is the hanger/grommet. To Diagnose the Circulation Pump Disconnect the circulation pump connector. The motor resistance is ~32 Ω. If both the circulation pump motor and drain pump motors operate, please see Electronic Control Diagnosis (Pump Motors) in the Electronic Controls section of this service guide.
  • Page 42 Drain System This section of the service guide will cover the 2. Locate the locking tab (on the back side of Drain components. the pump) and press it down while turning the pump counter-clockwise (as viewed from the The drain pump is a synchronous motor. It left side in front of the dishwasher).
  • Page 43 Dry System (Hidden Heater) The dishwasher must have water and the Diagnosing the Heater circulation pump must be running for the heater Disconnect the heater connector. The heater to operate. resistance is ~14 Ω. If open or shorted, the All 18 inch and 24 inch models are European- circulation pump and motor must be replaced.
  • Page 44 Schematics / Wiring Diagram – 44 –...
  • Page 45 Strip Circuits – 45 –...
  • Page 46 Index Symbols 888 27 Racks 26 999 27 Rollers 26 Air Gap 12, 27, 30 Safety Information 2 Safety Requirements 6 Schematics 44 Service Mode 23, 28 circulation motor 36 Spray Arm 33, 36, 37 Circulation Pump 8, 33, 34, 35, 40, 41 Spring 12, 16 Circulation System 36 Sump 11, 27, 30, 31, 33, 34, 35, 40...