Part number 550-142-850/0716
88
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WALL MOUNT GAS-FIRED WATER BOILER — Boiler Manual
Display Condition
FAULT 11 =
CH return sensor out of normal operating range (short circuit or open circuit). If sensor goes outside the range,
error will be generated. In case sensor is back to the normal operating range, error is gone. In error mode, heat
the operating range. Resolving situation can be achieved only if the sensor is within operating range again.
FAULT 12 =
DHW sensor out of normal operating range (short circuit or open circuit). If sensor goes outside the range, error
will be generated. In case sensor is back to the normal operating range, error is gone. In error mode, only DHW
outside the operating range. Resolving situation can be achieved only if the sensor is within operating range again.
FAULT 13 =
Exhaust sensor out of normal operating range (short circuit or open circuit). If sensor goes outside the range,
error will be generated. In case sensor is back to the normal operating range, error is gone. In error mode, heat
the operating range. Resolving situation can be achieved only if the sensor is within operating range again.
FAULT 14 =
CH supply sensor 2 out of normal operating range (short circuit or open circuit). If sensor goes outside the range
, error will be generated. In case sensor is back to the normal operating range, error is gone. In error mode, heat
the operating range. Resolving situation can be achieved only if the sensor is within operating range again.
FAULT 15 =
Fan driving problem – in case of new burner request the fan is switched on: if the controller measured a frequency
is back to the normal operating range, error is gone. In error mode, heat demands will be disabled. Resolving
situation can be achieved only if the speed is within operating range again.
FAULT 20 =
Warning – The water pressure, measured by the water pressure sensor, is higher than the low level and lower
than the nominal level. This is only an indication, the heat request is not switched off.
FAULT 21 =
Warning – The water pressure, measured by the water pressure sensor, is higher than the high level –4.3 psi
and lower than the high level. This is only an indication, the heat request is not switched off but there is a linear
output is equal to Fan absolute minimum speed + 20Hz.
FAULT 27 =
With the PVC/CPVC selection parameter equal to:
1. -
perature is still upper than the PVC maximum temperature, the controller stops indicating fault 27, where it
will stay for 5 minutes. The error solves itself after 5 minutes.
2. -
perature is still upper than the CPVC maximum temperature, the controller stops indicating fault 27, where
it will stay for 5 minutes. The error solves itself after 5 minutes.
FAULT 34 =
Low voltage (less than 100VAC) will trigger this error. This is only an indication, the heat request is not switched off.
When voltage brought is back (over 100VAC), error is resolved. (more than 1 pump wired to pump connection point).
FAULT 35 =
The controller measures a voltage supply frequency different from the voltage supply frequency pa-
rameter. This is only an indication, the heat request is not switched off. When the controller will mea-
sure a voltage supply frequency equal to the Voltage supply frequency parameter, error will be resolved.
(Example 60 Hz).
Figure 1124ROUBLESHOOTINGSUGGESTIONSFORFreeStyle
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BOILERS&AULTDISPLAYSANDDIAGNOSTICS(continued)
32 Troubleshooting(continued)
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