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ULTRAMAX PB 65 - 120
52 L290 ©MHS Boilers 13/12/2010
Display
or
QAA73 #
Function / Description
Range
Default Values
65
85
100
120
H628
Set limit of fan speed for service visit
0 ... 9950 1/min
0
0
0
0
H629
End user can acknowledge a pending
maintenance alarm via this parameter
0 ... 1
0
0
0
0
H630
Setting flags of maintenance alarms
0 ... 255
00000000
00000000
00000000
00000000
H631
Time for pump overrun in instantaneous
DHW heater Comfort function with
burner off (0 = pump off with burner off;
255 = pump always on)
0 ... 255 min
0
0
0
0
H632
Q8 support
00001111
00001111
00001111
00001111
H633
Selected period of time for repetition of
maintenance alarm after
acknowledgement
0 ... 255 days
0
0
0
0
H634
Operating hours (interval) since last
service visit
0 ... 10000 hrs
0
0
0
0
H635
Start-ups (interval) since last service
visit
0 ... 10000
0
0
0
0
H636
Months (interval) since last service visit
0 ... 255
months
0
0
0
0
H637
Duration of pump shutdown when
diverting valve changes from space
heating to DHW heating
0 ... 10 s
0
0
0
0
H638
Delay of pump shutdown when diverting
valve changes from space heating to
DHW heating
0 ... 10 s
0
0
0
0
H639
Limitation of temperature boost by dT
control
0 ... 100 %
40
40
40
40
H640
Setting value QAA73: prepurge time
0 ... 51 s
10
10
10
10
H641
Setting value QAA73: postpurge time
0 ... 51 s
3
3
3
3
H642
Modulation air during full charging of
stratification storage tank
(charging control)
0 ... 100 %
100
100
100
100
H643
Set speed during full charging of
stratification storage tank
(charging control)
0 ... 9950 rpm
6750
6750
6750
6750
H644
Charging temperature set point boost for
recharging the stratification storage tank
when controlling to charging
temperature
0 ... 30 °C
0
0
0
0
H645
Maximum fan speed on standstill
0 ... 12750 rpm
100
100
100
100
H646
Modulation air when burner control is
not operating
0 ... 100 %
0
0
0
0
H647
Ionisation current maintenance alarm
(0 = did not occur, 1 = did occur)
0 ... 255
0
0
0
0
H648
Duration of «Controller delay» after start-
up when cycling in instantaneous DHW
outlet operation: output delivered now is
that prior to shutdown
0 ... 50 s
0
0
0
0
52


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  • What is the fault code 153 on ultramax pb 120 boiler Submitted on 10-12-2021 at 10:53

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