31
®
•
The burner is not firing. Switch the burner on and wait for the unit to begin modulating.
•
The current setpoint is A0, A1 or A2. Use commission ratio mode to adjust these set points.
•
The motors are moving to the required positions. Wait for the motors to stop moving.
Leaving Adjust Ratio Mode
To leave adjust ratio mode and return to run mode, press the key labeled
COM
(ENTER) for > 3 sec-
onds then press the same key again to return to run mode
Finding the Software Issue
There are two methods for finding the software issue:
1.
From run mode, press the
COM
key. The software issue is shown on the display.
2.
Use the engineer’s key.
ADJUST RATIO MODE
RUN MODE
COM
COM