MAINTENANCE AND OPERATING MANUAL
Electronic controller
HAS T 070÷140
88
ENGLISH
EN
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.
Notes:
* Can be: unit warning-alarm except for pumps-unit alarm
+ Delayed with different time lags at start-up and in normal operation. Can be disabled in defrost
Apart from the fans alarms, deactivation of fans due to other alarms can depend on unit configuration;
The compressor overload alarms deactivate the entire circuit in which the compressor is installed;
The compressor oil level alarms can be used as an oil differential alarm with a 0 second trip delay.
(**) To lower the freeze protection setpoint, contact the MTA after-sales service and add a suitable amount of antifreeze
solutions to the system (see chap. 4.3.4 “Freeze protection” ).
(***) Flow switch alarm.
A213 Evaporator water OUT 2 low
temperature
Unit Off except
for Pumps
Delayed Auto Yes With probe enabled
A214 Probe BEWOT2 faulty or open
circuit
Unit Off except
for Pumps
Delayed Auto Yes With probe enabled
A215 Condenser water IN high
temperature
Unit Off Delayed Auto Yes With probe enabled
A216 Condenser water IN low
temperature
Unit Off Delayed Auto Yes With probe enabled
A217 Probe -BCWIT faulty or open
circuit
Unit Off except
for Pumps
Delayed Auto Yes With probe enabled
A218 Condenser water OUT high
temperature
Unit Off Delayed Auto Yes With probe enabled
A219 Condenser water OUT low
temperature
Unit Off Delayed Auto Yes With probe enabled
A220 Probe -BCWOT faulty or open
circuit
Unit Off except
for Pumps
Delayed Auto Yes With probe enabled
A221 Expansion IPEX60D (IPX
106D) not connected
Unit Off Delayed Auto Yes With expansion present
A222 Expansion IPEX70D (IPX
125D) not connected
Unit Off Delayed Auto Yes With expansion present
Alarm
code
Alarm description Controller action Operation Reset
Active
in OFF
Notes
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