MAXA i-32V5C MIDI 0121 - Alarm Codes and Descriptions

27
Controllo per i-32V5 MIDI Air/water inverter chillers and heat pumps with axial fans
Parame-
ter
 Unit Default  Visibility

 Notes
r22
Upper limit Joint funcon I
band
°C 7 -16÷50 I Respect r22 ≥ r28 ≥ r08
It is recommended
not to change this
value, as this could
aect the operaon
of the unit
r23 Type of boiler use / 6 0÷6 I See par. 18.6
r24
Type of use integraon re-
sistors
/ 3 0÷3 I See par.18
r28
Upper limit for joint opera-
on 2nd band
°C -7 -16÷50 I Respect r22 ≥ r28 ≥ r08
It is recommended
not to change this
value, as this could
aect the operaon
of the unit
r29
Temperature oset for boil-
er
and system resistors rst
set point (HEA)
°C 0 0÷100 I See par.18.6
r30
Oset temperatura per cal-
daia
e resistenze impianto sec-
ondo set point (HEA2)
°C 0 0÷100 I
r31
Temperature oset for boil-
er
and sanitary heang ele-
ments (SAN)
°C 0 0÷100 I
r32 Boiler equipment / 1 0÷3 I See par. 18.6
r33
Pump management with ac-
ve resistors
/ 3 0÷3 I
L02
User enablement for mini-
mum Hz
/ 0 0÷1 I
0=funcon disabled
1=funcon enabled
L03 Minimum acve Hz / 6 0÷6 I
See chapter "16. MINIMUM HZ
FUNCTIONS".
rE01 Enabling DS in chiller / 0 0÷1
0=funcon disabled
1=funcon enabled
23. ALARMS
Some of the alarms that may occur on the unit are described below. When the control is switched o, the alarms are reset and the counts of the
relevant operaons are also reset. If the alarms are sll present when the machine is switched on again, contact technical assistance. The above
informaon may be subject to updates, in case of doubt please contact the company.

The water-side ow switch is already installed inside the unit and must not be tampered with or bypassed in any way.The ow switch is bypassed
by the control for a period of 10 seconds from the start of the machine, aer the bypass me the status of the digital input is considered, if it is
acve the presence of ow is considered. If a lack of ow is diagnosed for a me of at least 5 seconds, the alarm is acve and the circulator is
acvated for 120 seconds.
Once the ow of water is restored, the alarm is automacally reset, but if the alarm occurs more than 3 mes per hour, the reset becomes
manual.
The alarm is not acve in the following condions:
• during domesc hot water producon;
• during the system venng funcon.

If the water delivery probe detects a value higher than  for longer than 50 seconds the alarm is acve. It deacvates when the temperature
returns below .

If the outlet water probe has a value lower than A08 (default A08 = 3,0°C), the alarm is acve. The deacvaon occurs if the temperature re-
corded by the same probe is higher than  (default 6,0°C). The alarm is bypassed for 120 seconds aer switching on in heang mode.
This alarm is manual reset.

The corresponding alarm is acvated if any connected and enabled probe is short-circuited or interrupted. The alarm is also acve if the upper
limit of the probes (150C) or the lower limit (-50°C) is exceeded. A probe congured as a DHW probe does not give rise to an alarm if DHW pro-
ducon is not enabled.
NOTE:


