G2 Parts Breakdown and Troubleshooting Guide

Below is the parts breakdown for the Sloan G2 Flushometer. Scroll down and click on the part number(s) you need to repair your G2 Flushometer. Note that the Sloan G2 flushometer is the exact same item as the Sloan G2 Optima Plus flushometer, the naming convention has simply been shortened in recent years to just 'G2' instead of 'G2 Optima Plus'. (If an item below does not have a link, we still carry it, but the item is not currently on our website. If you would like to order this item, give us a call.) View our G2 Troubleshooting Flow Charts for additional help troubleshooting your G2 flushometers.

Quick Links

Photographic Breakdown

Troubleshooting Q&A

Complete Units

G2 Optima Breakdown PDF

1a. #08696 - EBV138A - G2 Cover, Ring, Sensor Assembly for Closet
1b. #08699 - EBV139A - G2 Cover, Ring, Sensor Assembly for Urinal (Also available to fit Zurn)
2. #08701 - EBV142A - Cover Assembly with Override Button
3a. #08715 - EBV130A - Override Button Assembly (Includes screws and hex wrench)
3b. #08707 - EBV132A - Screws and Hex Wrench
4. #08705 - EBV131 - Lens Window Cover
5. #08421 - EBV14 - Locking Ring
6a. #08697 - EBV129AC - G2 Module for Closet
6b. #08698 - EBV129AU - G2 Module for Urinal
7. #08702 - EBV134 - Plastic Sub Base
8. #08720 - EBV145A - Base with Solenoid
9. #08721 - EBV136A - G2 Solenoid Only
10a. #85629 - EBV1025A - Flex Tube Diaphragm Assembly (Includes 0.25 GPF Volume Regulator)
     10b. #08695 - EBV1023A - Flex Tube Diaphragm Assembly (Includes 0.5 GPF Volume Regulator)
     10c. #08137 - EBV1022A - Flex Tube Diaphragm Assembly (Includes 1.0 and 1.5 GPF Volume Regulator)
     10d. #08285 - EBV1020A - Flex Tube Diaphragm Assembly (Includes 1.6 and 3.5 GPF Volume Regulator)
     10e. #08710 - EBV1021A - Flex Tube Diaphragm Assembly (Includes 2.4 GPF Volume Regulator)

11a. #08703 - EBV102-1 - White Volume Regulator
     11b. #08704 - EBV95 - Green Volume Regulator
     11c. #08706 - EBV102-2 - Black Volume Regulator
     11d. #08708 - EBV101 - Blue Volume Regulator
12. #08711 - EBV91 - Range Tool
13. #34727 - Equiparts Strap Wrench
14. #37171 - 7/64" Hex Wrench
15. #08461 - EBV1025A - Valve Body Less Handle Opening
16. #08396 - EBV1017A - Handle Cap - Solid
17. #SP795 - A3-1 - Valve Body
18. #08040 - H550 - Tailpiece Coupling Nut
19. #08038 - H552 - Locking Ring
20. #08037 - EBV1025A - O-Ring
21. #08039 - H551A - Adjustable Tailpiece 2-1/16 (Other Lengths Available)
22. Click Here for Control Stops
23a. #08322 - H1010ABX - 1" Vandal Proof Stop Cap
23b. #08321 - H1009ABX - 3/4" Vandal Proof Stop Cap
24. #05121E - O-Ring

Troubleshooting Q&A

Below is a Troubleshooting Q&A Guide for G2 Optima Plus Flushometer from Sloan. The guide highlights the most commonly occurring problems and how to go about fixing them. As always you can call us for assistance or if you need to replace a part and/or unit.

1

PROBLEM:
Sensor flashes continuously only when user steps within range

CAUSE:
A) Unit in start-up mode

SOLUTION:
A) No problem. This feature is active for the first ten minutes of operation.

2

PROBLEM:
Valve doesn't flush; sensor not picking up user

CAUSE:
A) Range too short.

SOLUTION:
A) Increase the range.

Learn how to complete sensor range adjustments on your G2 flushometer by watching our YouTube video: Sloan G2 Flushometer Sensor Range Adjustment.

3

PROBLEM:
Valve doesn't flush; sensor picking up opposite wall or surface, or only flushes when someone walks by. Red light flashes continuously for first ten minutes even with no one in front of the sensor.

CAUSE:
A) Range too long.

SOLUTION:
A) Shorten range.

Learn how to complete sensor range adjustments on your G2 flushometer by watching our YouTube video: Sloan G2 Flushometer Sensor Range Adjustment.

4

PROBLEM:
Valve DOES NOT flush even after adjustment

CAUSE:
A) Range adjustment potentiometer set at full “max" or full "min" setting.

B) Batteries completely used up.

C) Problem with electronic sensor module.

SOLUTION:
A) Readjust potentiometer away from full “max" or “min" setting.

B) Replace batteries.

C) Call Equiparts at 800-442-6622 to replace Electronic Sensor Module or Click here for #08697 (G2 Closet Module) or #08698 (G2 Urinal Module).

5

PROBLEM:
Unit flashes four quick times when user steps within range

CAUSE:
A) Batteries low.

SOLUTION:
A) Replace batteries.

6

PROBLEM:
Valve DOES NOT shut off

CAUSE:
A) By-pass orifice in diaphragm is clogged with dirt or debris, or by-pass is clogged by an invisible gelatinous film due to "overtreated" water.

B) Dirt or debris fouling stem or flex tube diaphragm.

C) O-ring on stem or flex tube diaphragm is damaged or worn.

D) Problem with electronic sensor module.

SOLUTION:
A) Remove flex tube diaphragm and wash under running water. NOTE: Size of orifice in by-pass is of utmost importance for the proper metering of water by the valve. Equiparts recommends that you do not enlarge or damage this orifice. Replace inside parts assembly if cleaning does not correct the problem.

B) Remove inside parts assembly and wash under running water.

C) Replace quad seal if necessary.

D) Turn solenoid counter-clockwise very slightly.

E) Replace electronic module.
Click here for #08697 (G2 Closet Module) or #08698 (G2 Urinal Module).

7

PROBLEM:
Not enough water to fixture

CAUSE:
A) Wrong flush volume regulator installed in flex tube diaphragm kit.

B) Wrong Optima Plus model installed; i.e. 1.0 GPF urinal installed on 3.5 gallon closet fixture.

C) Enlarged bypass in diaphragm.

D) Control stop not adjusted properly.

E) Inadequate volume or pressure at supply.

SOLUTION:
A) Install the correct regulator.
#08703 - White Volume Regulator - 3.5 GPF
#08704 - Green Volume Regulator - 0.5, 1.0, and 1.6 GPF
#08706 - Black Volume Regulator - 1.5 GPF
#08708 - Blue Volume Regulator - 2.4 GPF

B) Replace with proper Optima Plus model.

C) Replace flex tube diaphragm.
#85629 - Flex Tube Diaphragm Assembly 0.25 GPF
#08695 - Flex Tube Diaphragm Assembly 0.5 GPF
#08137 - Flex Tube Diaphragm Assembly 1.0 or 1.5 GPF
#08285 - Flex Tube Diaphragm Assembly 1.6 or 3.5 GPF
#08710 - Flex Tube Diaphragm Assembly 2.4 GPF

D) Readjust control stop.

E) Increase water pressure or supply (flow) to valve.

View our Sloan G2 Flush Valve Volume Regulator Troubleshooting Video for more volume troubleshooting information.

8

PROBLEM:
Too much water to fixture

CAUSE:
A) Wrong flush volume regulator installed in flex tube diaphragm kit.

B) Control stop not adjusted properly.

C) Wrong Optima Plus model installed; i.e. 3.0 GPF model installed on 1.0 or 1.5 gallon urinal fixture.

D) Dirt in diaphragm bypass.

B) Readjust control stop.

C) Replace with proper Optima Plus model.

D) Clean under running water or replace flex tube diaphragm.

View our Sloan G2 Diaphragm Cleaning Video to see how to clean the diaphragm with step by step instructions.

9

PROBLEM:
Unit works with Cover Off, but not On.

CAUSE:
A) Broken override button or missing rubber divider.

SOLUTION:
A) Replace override button or cover.

BATTERY REPLACEMENT
When required, replace batteries with four (4) alkaline type AA batteries. Note: water does not have to be turned off to replace batteries. Loosen the two (2) screws on top of unit. Remove the complete cover assembly. Lift the sensor module from its plate. Unplug the electrical connector from the battery compartment cover. Loosen the retaining screw on the battery compartment cover. Install four (4) alkaline type AA batteries.

Install the battery compartment cover and secure with retaining screw. Make certain that the battery compartment cover is fully compressed against the gasket to provide a seal. Do not overtighten. Plug the electrical connector into the battery compartment cover. Reinstall the sensor module onto the plate. Reinstall the complete cover assembly onto the plate. Tighten the two (2) screws on top of the unit.

CARE AND CLEANING INSTRUCTIONS
DO NOT use abrasive or chemical cleaners to clean flushometers, they may dull the luster and attack the chrome or special decorative finishes. Use ONLY soap and water, then wipe dry with clean cloth or towel. While cleaning the bathroom tile, the flushometer should be protected from any splattering of cleaner. Acids and cleaning fluids can discolor or remove chrome plating.

G2 Optima Troubleshooting PDF

View the Sloan G2 Optima Plus repair parts or our selection of Sloan flush valves.