MTA TAEevo Tech 702 - Page 103

OPERATING AND MAINTENANCE MANUAL
Chapter 7 - Electronic controller
TAEevo Tech 015÷802 60 Hz UL
102
The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited
ENGLISH
EN
AL33 C Anti-freeze alarm set in heat pump mode.
Used to set a temperature value below which the anti-freeze, low
ambient air temperature (air/air unit), low air outlet temperature
(air/air unit) alarm is tripped (from AL31 to AL32).
AL31 AL32 °C
°F
Dec
Int
AL34 C Anti-freeze alarm differential in chiller mode, low ambient air
temperature, low outlet air temperature.
Provides the facility to set a temperature differential that
determines the alarm reset.
0.1
0
25.0
45
°C
°F
Dec
Int
AL35 C Anti-freeze alarm delay (low outlet air temperature in air/air
units) at unit start in heat pump mode.
ATTENTION
If in stand-by / remote OFF, the unit presents an anti-freeze
alarm situation and the time set in parameter AL35 is different
from zero; selecting operation in heat pump mode from control
button or digital input the anti-freeze situation is reset and
compressor starting is allowed for the time set in parameter
AL35 so that the unit heats the water or the air. Once delay time
AL35 has elapsed, if the anti-freeze control probe continues to
read a temperature < AL33 set for at least AL36 seconds, the
unit is blocked and an anti-freeze alarm is generated.
0250Sec
AL36 C Anti-Legionella alarm delay, low ambient air temperature, low
outlet air temperature in heat pump mode.
Used to set a time interval during which the temperature must
remain below the set imposed by parameter AL33 in order for the
anti-freeze alarm to trip.
0250Sec
AL37 C Maximum number of trips/hour of anti-freeze alarm, low air
temperature at heat pump outlet.
Establishes a maximum number of trips per hour of the anti-
freeze alarm, low ambient air temperature, low air outlet
temperature, after which the alarm switches from automatic reset
to manual reset.
Reset is always manual if AL37=0.
Reset is always automatic if AL37=16.
Reset switches from automatic to manual if AL37 is from 1 to 15.
016
AL38 C Anti-freeze alarm operation in heat pump mode:
0= stops ONLY the compressors when the temperature read by
the anti-freeze control probe falls below the AL33 set and signals
the anti-freeze alarm but with a label, while not activating the
buzzer or the alarm relay.
1= stops the compressors when the temperature read by the anti-
freeze control probe falls below the AL33 set and signals the anti-
freeze alarm with label + buzzer + alarm relay.
01
Compressors discharge high temperature
AL39 C Compressors discharge high temperature alarm set. 0
32
150
302
°C
°F
Dec
Int
AL40 C Compressors discharge high temperature alarm differential. 0.1
0
25.0
45
°C
°F
Dec
Int
AL41 C Maximum number of trips per hour of compressors discharge high
temperature alarm.
Establishes a maximum number of trips per hour of the
compressors discharge high temperature alarm, after which the
alarm switches from automatic reset to manual reset.
Reset is always manual if AL41=0.
Reset is always automatic if AL41=16.
Reset switches from automatic to manual if AL41 is from 1 to 15.
016
Generic unit shut-down alarm
Parameter Level Description Min. Max. UM Resolution