Installation Guide

(ESM)

ERROR

CODE

(ET)

DIAGNOSTIC

LED

INDICATES CORRECTIVE ACTION*

E10

E11

E12

9, 10, 11 or 12 FLASHES

(Red)

Electronic Thermostat (ET) error 1. Turn off electrical power.

2. Check wiring at Electronic Thermostat (ET) for damage.

3. Turn on electrical power at breaker.

4. If this code flashes condition continues, replace the Electronic

Thermostat (ET).

Residen al Electric Water Heater Use and Care Guide • 23

TROUBLESHOOTING

*These instructions are brief and intended as guidance for a qualiﬁ ed person. If you lack the necessary

skills to perform these procedures call 1-877-817-6750 for assistance.