Error Codes
If Parameter 35 is set to 12 (DHW - Storage Tank with
NTC Sensor) and a DHW aquastat is connected to the
Prestige 24 volt terminal strip connections for DHW, then
a “soft” lockout will occur. The display will show an error
code of
b_33
or
b_38
alternating with a status code of
9 depending on the status of the aquastat.
The error code display on the Prestige will
switch from error code b_33 to error code b_38
if the IDWH aquastat is adjusted from a “closed”
to “open” position. The error code display on
the unit will not switch from an error code b_38
to an error code b_33 when the aquastat is
adjusted from an “open” to “closed” position.
DHW BURNER / CIRCULATOR FUNCTION
SETUP
The type of DHW/boiler operation can be revised to the
application requirements. The Prestige offers 4 different
DHW/Boiler Function setup modes. Those function
setups are defined as:
-
OFF
In this mode the Prestige will NOT recognize
any request for a “call for heat” from a DHW aquas-
tat or NTC sensor. This mode shuts down the DHW
NOTICE
operation, both burner and DHW circulator function,
of the Prestige control. The Prestige will maintain
all CH operation, both burner and CH circulator
function, with no domestic priority in this mode.
-
ON
In this mode, factory setting, the Prestige burn-
er and DHW circulator will operate in a response to
a “call for heat” by the IDWH. This request can be
either a NTC sensor or DHW aquastat. There is
domestic priority over central heating in this mode.
-
OFF + Pump Continuous
In this mode of opera-
tion the Prestige will block the burner operation dur-
ing a request for “call for heat” from a NTC sensor
or DHW aquastat. The DHW circulator will remain
energized at all times even during a CH request for
heat. The Prestige will maintain all CH operation,
both burner and CH circulator function, with no
domestic priority feature.
-
ON + Pump Continuous
The Prestige will main-
tain continuous circulation on the DHW circulator
and will provide burner function when a request for
heat is generated by the NTC sensor for DHW or by
the DHW aquastat. The Prestige will provide
domestic priority by blocking the CH circulator func-
tion during a DHW request for heat.
When determining the type of DHW operation,
especially those applications with continuous
pump feature the installer should install a ther-
mostatic mixing valve on the outlet of the
domestic tank to prevent a potential scalding
hazard. Failure to comply could result in a
scalding hazard causing severe personal injury,
death or substantial property damage.
Parameter Adjustments - OFF Mode
The parameter adjustment to set the DWH operational
option to
OFF
can be done either through the STBY
mode during normal operation or by entering into the
CODE mode.
When the unit is in normal operation and in the STBY
mode, press MODE button once to enter PARA. Press
STEP button twice to Parameter 2. Press - button to
adjust to the following revised setting and press STORE
to save the setting.
DANGER
Parameter
Factory
Setting
Minimum
Setting
Maximum
Setting
33
46ºF
0ºF
54ºF
9
Error Code
Reason / Correction
b_33
Parameter 35 is set as 12 (DHW Type -
Storage tank with NTC Sensor) and
the IDWH aquastat is in "CLOSED"
position. Reset Parameter 35 to 13.
b_38
Parameter 35 is set as 12 (DHW Type-
Storage Tank with NTC Sensor) and
the IDHW aquastat is in "OPEN"
position. Reset Parameter 35 to 13
Parameter
Factory Setting
Revised Setting
2
2_01
2_00
