Troubleshooting / Dépannage
• We recommend that you use only genuine Delta
®
replacement parts.
• DO NOT USE EXCESSIVE FORCE to close the inlet stop stem. We RECOMMEND that the flushometer be flushed while closing the inlet stop. The noise
created by the water flow or the flow into the fixture will stop when the inlet water is shut off.
Problem Indicator Cause Solution
No lights on
sensor
No power Batteries not installed
correctly.
Check that the four “AA” Alkaline batteries are positioned properly in the
battery holder. Use the +/- signs on the batteries and the +/- signs on the
battery holder for correct positioning.
Batteries are depleted. Replace with four new “AA” Alkaline batteries (see “Battery Replacement
(see Figure 15)” on page 19).
Damage or corrosion of the
battery terminals.
Check for damage or corrosion of the battery terminals in the battery holder.
Replace battery holder and batteries if necessary.
Excessive
noise
Excessive noise High pressures may lead to
an increase in noise.
While the TECK Flushometer will operate up to 125 PSI, the preferred
operating range is between 35 to 65 PSI.
1. Lower the flow rate by reducing the flowing pressure upstream of the
flushometer by adjusting the screw stop. Close the stop completely and
re-open 1 turn. Then adjust the screw to stop the noise.
2. Other options include installing a Pressure Reducing Valve (PRV), or ball
valve upstream to the flushometer.
Damaged renewable seat. On flushometers that have been installed for a number of years, check the
renewable seat for wear and replace if necessary.
Partially closed inlet stop. Open inlet stop
Excessive
water flow rate
Splashing of water out of
the fixture.
Inlet stop may be open too
much.
Close the stop completely and re-open 1 turn. Adjust the stop to meet the
required flush volume specification.
W
Operation of flushometer with inlet stop BELOW ONE TURN
OPEN may cause EXCESSIVE NOISE. The lowest open setting for the
inlet stop may vary depending on the installation.
Shortage
of water to
properly flush
bowl
Fixture does not clear
waste.
Inlet stop may not be open
enough.
OPEN inlet stop fully.
Supply line may be blocked
or under sized.
CHECK supply line for size or obstruction, partially closed gate or other
supply line valve, corroded or under size water piping.
Not enough water pressure
and/or flow rate.
CHECK water pressure and flow rate.
Water supply may be restricted upstream. Open any devices being used to
restrict pressure and/or flow rate to the flushometer (PRV, ball valves, supply
stops).
Continuous
flushing
Flushometer does not stop
after cycle is complete.
The Regulating Screw may
require adjustment.
Adjust by slowly turning the regulating screw LEFT (counter-clockwise)
(except on models that have a fixed volume). See section “Flush Volume
Adjustment/Réglage Du Volume De Chasse” on page 7 for detail on
adjusting.
Bypass slot partially or
completely obstructed.
1. Clean bypass slot.
2. Replace cap/solenoid & regulating screw assembly if required.
See section “Cap/Solenoid & Regulating Screw Assembly Maintenance
(see Figure 18)” on page 21 for instructions.
Diaphragm/Guide Assembly
obstructed or damaged.
1. Check for damage and alignment of the diaphragm.
2. Replace Diaphragm/Guide Assembly if required.
See section “Diaphragm/Guide Assembly and Seat Maintenance (see
Figure 19)” on page 22 for instructions.
MMO button not working
correctly.
1. Clean MMO button assembly.
2. Replace MMO button assembly if required.
See section “MMO Button Maintenance (see Figure 20)” on page 23 for
instructions.
Solenoid not connected to
controller or damaged.
1. Verify wiring is connected correctly.
The solenoid is connected black to
black, red to red with the
electronic compartment
.
2. Replace cap/solenoid & regulating screw assembly if required.
See section “Cap/Solenoid & Regulating Screw Assembly Maintenance
(see Figure 18)” on page 21 for instructions.
Inadvertent
flushing
Flushometer will activate
with no one using the
fixture.
Sensor range needs to be
adjusted.
Verify sensing range of the flushometer and adjust if required.
See section “Setup Mode Adjustments (see Figures 10-11) / Réglages du
mode d’installation (voir la Figures 10-11)” on page 8 for instructions.
Sensor requires adjustment
for reflection of infrared
signal.
See section “Inadvertent Flushing” on page 20 for instruction on sensor
angle adjustment.
Page - 15 of 25
213631, Rev. A
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