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TANKLESS
WATER HEATERS
Models & Prices
Tankless Water Heater Product Guide
Description / Specification
Tankless Water Heater Applications
Residential / Commercial
Tankless Water Heater Electrical Guide
Service Calculations
Tankless Water Heater Installation
Plumbing / Electrical
Tankless Water Heater Cost Comparisons
Reports / Listings
Tankless Water Heaters Service Guide
Remove / Repair
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REPLACING A HEATING ELEMENT
Required Tools:
Phillips head screw driver, 1 inch element wrench or adjustable wrench,
bucket, rag, hair dryer, battery powered voltmeter.
WARNING: To avoid
electrical shock, make sure that all of the power is off to the heater
before attempting to remove the old heating element and while installing
the new heating element.
- Turn off all the power to the heater. Confirm the power is
off with a voltmeter, even if the status light (or LED) on the
control board is off. There may be multiple breakers powering your model
heater.
- Open a hot water faucet nearby. While the water is running,
turn off the water supply to the heater. This will help siphon some
of the water out of the heater.
Typical inlet valve ( closed position)
Figure: Heating elements used in Seisco water
heaters, standard 1" screw flange, 12" long.
- Using a large Phillips screw driver, remove the six
screws from the right bottom clean out plate on the under side of the
heatingchamber to drain the remaining water from the heater into a bucket.
Replace the plate after draining.
- Using a Phillips head screw driver, remove the two screws
holding the red and black wires to the top of the heating element.
- Use the element wrench to loosen the heating element.
Wrap a rag around the heating element to prevent water from dripping
onto the control board. Remove the heating element and the o-ring seal
from the heater.
- Make sure the new o-ring seal is in position on the new heating
element and install the assembly into the heater. Tighten the element
until snug (not more than 6 ft-lbs.).
- Replace the red and black wires back onto the top of the heating
element with the two Phillip head screws.
- Make sure the hex head drain plug screw is tight and turn on
the water supply to the heater. Check for leaks and water seepage around
the heating element and drain plug.
- If any water dripped onto the control board, use a hair
dryer to dry the board and the rest of the heater. Make sure to
dry behind the board as well. The heat from the hair dryer will not
harm the control board.
- Fill up the heater with water. If there are no water leaks,
turn all the power back on.
Note: If the heater sounds an alarm and a 126 diagnostic
code appears, turn the power off, check for leaks again and dry the entire
heater thoroughly. The alarm means that moisture was detected and the
control disabled the heater.
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