Installation / Operation Instruction Manual

Step 4. Press lower right “Next” button. The display will flash and show the number of any Lockout codes. If

there are no lockouts, the display will show 00. If there are multiple lockout codes “Next” will scroll through

them.

Step 5. Press “Next”, the display will show “DHW MAX”. This is the maximum allowable temperature that the

unit can get to before a lockout occurs.

Step 6. Press Next, display will show “DELTA T DHW”, this is the real time temperature reading of the tank.

Step 7. Press “Done” to exit Diagnostic Mode and return to the DHW setpoint in User Mode.