Emerson Dixell iProChill IPC115D Application Manual page 176

10.10 AIR/AIR UNIT LOW TEMPERATURE ALARM & ANTI-FREEZE ALARM IN HEAT PUMP MODE
Alarm code
Display in keyboard
Cause of activation
Reset
Reset
Icon
Action
Regulators
Alarm
Reverse valve
Recovery valve
Free-cooling on/off valve
Auxiliary relay
Idle running valve
Supply ventilation
Condensation ventilation
Support/boiler/anti-freeze
Support/boiler/anti-freeze
Pump/and water evaporator
and condenser
Compressors
Pump down solenoid valve
1592025050 iProChill v2.5 10D00 AG v1.3 GB 18.02.2016.docx
b1AH-...b4AH (anti-freeze alarm in circuit n° 1..4 heat pump mode)
From DI: Antif/lo temp.C1 (DI - HP)-...Antif/lo temp.C4 (DI - HP)
From AI: Antif/lo temp.C1 (AI - HP)-...Antif/lo temp.C4 (AI - HP)
In air/air unit, the low temperature alarm is detected. In other types of unit,
antifreeze alarm is detected.
It is detected both in heat pump working mode and stand-by/OFF-remote
mode. And the circuit must be configured with compressors.
When unit just switch on, this alarm is detected only after AL43 delay past.
From DI: Antifreeze alarm circuit 1...4 (DI type=6...9). If only one DI
configured, it will be used for all the 4 circuits.
From AI: Select probes between evaporator probes(AI type=17...22) by par
AL48 and check:

If the unit is working in heat pump mode, when the selected probes value
<= AL41 set for AL44 time, alarm occur.

If the unit is in stand-by/OFF-remote mode, chose the highest value
between AL34 and AL41 as SET, when the selected probes value <= SET
set for AL36/AL44 time, alarm occur.
From DI: DI deactivate
From AI:

Unit ON: Regulation probe for anti-freeze temperature >= A41 set + AL42
differential.

Unit OFF: Regulation probe for anti-freeze temperature >= (AL34/AL41)
set + (AL35/AL42) differential.
Automatic – becomes manual after certain number of interventions/hour (reset
procedure in functions menu)
This number can be:

Heat pump: AL45

Unit OFF: the minimum between AL37 and AL45
flashing
If AL46=0 only the compressors are switched off. The label alarm is signalled
by the alarm relay, buzzer and the heaters are not activated
If AL46=1 the compressors are switched off. The label alarm is signalled and
the alarm relay + buzzer are activated. If the anti-freeze alarm comes from DI
the anti-freeze heaters are also activated
If AL46 = 1 Relay + buzzer activated + anti-freeze heaters
it follows its regulation
it follows its regulation
it follows its regulation
It follows/they follow its/their regulation
It follows its regulation
If air/air unit off
It follows its regulation
If air/air unit off otherwise follows its regulation
With DI alarm activated
It follows its regulation
Off
off
iProCHILL
176/205