• If you are getting any error code regarding anode(s), the first step is
to disconnect anode rod power wire from the the UPPER,
MIDDLE, or LOWER (dependent on the alert(s) given) anode(s) as
shown in the photo to the right. NOTE: Leave water heater
powered on.
• With anode rod power wire disconnected, the display should give an
alarm of A121 or A123. If neither of these codes occurs after
disconnecting the anode power wire, replace the anode control
module.
• If either the A121 or A123 code appear after disconnecting the
anode power lead, the next step is to make sure the retainer nut for
the spade terminal connector is tightened down securely. Once
secure, reconnect wiring, clear alarm and see if issue is resolved.
• If issue persists, proceed to next steps.
• NOTE: To check the anode rod, turn off power to the water
heater.
• With power wire lead removed from anode, check for ohms reading
by putting one meter lead to center stud of anode and the other meter
lead to the hex head of the anode as show in the photos to the right.
• When checking the anode, you will need to do the ohms checking
using both “polarities”. As shown to the right, check with black to
stud and red to hex nut, then swap meter lead connection points and
perform the check again.
• Ohms should only be sensed via one of the polarity tests. The other
polarity should show no ohms (OL). If you get no resistance (“OL”
reading) or ohms resistance on both polarities, replace the
anode.
• NOTE: Meter should be set on a range between 200K to 600K. Test
is not accurate when meter is set to check Mega ohms (MΩ)
• If no issue found with anode, proceed to next page.
Triton Service Manual SVC1020T ; Rev 4
80 and 100 gallon chassis
44
Troubleshooting Error Codes
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