106
14 - USE
14.18 - Flue blocked
pressure switch
This appliance is equipped with a safety
fl ue blocked pressure switch (see Figures
3-3 through 3-8, item “24”) that shut-off
the unit when the fl ue exhaust vent pipe is
blocked. If this pressure switch shuts off
the unit (Loc 5 or Loc 25), do not attempt
to place the heater in operation but
contact a qualifi ed technical service that
it will reset the unit after checking for any
potential dangerous situation.
WARNING!!!
If the safety
fl ue blocked pressure switch shuts off the
system do not attempt to reset or repair the
unit. It is mandatory to contact a Qualifi ed
service agency. Failure to comply with this
requirement can result in excessive levels of
carbon monoxide which can result in severe
personal injury or death!
14.19 - Shuts heater
down
1. Follow “To Turn Off Gas to
Appliance” on page 3 of this
manual.
2. Do not drain the system unless
exposure to freezing temperatures
will occur.
3. Do not drain the system if it is fi lled
with an antifreeze solution.
14.20 - How to
clean the appliance
jacket
To clean the appliance jacket, use only
a soft cloth dampened with water. Do
not use aggressive or abrasive agents.
Err 110 Flapper valve not open error a) Check for any obstruction into the exhaust system
b) Check the fl apper valve (See Figure 3-2 item 24)
Err 111 Flapper valve not closed error Check the fl apper valve (See Figure 3-2 item 24)
Err 112 Internal software error Replace the power control board
Err 113 Internal software error Replace the power control board
Err 114 Too low water fl ow a - Check water fl ow into the system (parameter 1062), it
must be higher than parameter 3035.
a - Increase the water fl ow into the system
b - Check for any obstruction into the water system
Err 115 Multiple burner master failure Reset via 3013 parameter
Err 116 Multiple burner communication
failure
a - Bus communication interrupted
a - burner is not working
a - check for the bus communication
b - repristinate the burner that is light off.
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