Trane Picco R3206A Manual page 31

14.1 [E006] FLOW SWITCH
The water side flow switch is already installed inside the unit and MUST NOT be tampered with or bypassed in any way. The flow switch is by-
passed for 10 seconds after the unit is switched on. When the bypass time has elapsed, you must evaluate the status of the digital input, if active,
the flow is considered present.
If the flow is found to be missing for 5 seconds, the alarm is triggered and the circulator switches on for 120 seconds
If the alarm triggers more than 3 times an hour, it must be reset manually.
The alarm does not trigger in the following conditions:
• During domestic hot water production;
• During the plant venting cycle function.
14.2 [E018] HIGH-TEMPERATURE
If the water delivery probe detects a value higher than 65°C for longer than 50 seconds, the alarm is active. It deactivates when the temperature
returns below 62°C.
14.3 [E020] INVERTER TRASDUCTORS
For compressor enabled for more than 150 seconds, the suction pressure probe detect a pressure higher than the condensation pressure probe,
the alarm displayed is E020. The alarm is not resettable (it is necessary to cut the power supply to eliminate the alarm).
This alarm is not in defrosting mode.
14.4 [E005] ANTIFREEZE
If the outlet water probe has a value lower than A08 (3°C), the alarm is active. It deactivates if the temperature recorded by the probe is higher
than +6°C. The alarm is bypassed for 120 seconds from switch on in heating mode.
14.5 [E611÷E681] PROBE ALARMS
The alarm is triggered if any connected or enabled probe is short-circuited or interrupted.
The alarm also triggers if the upper limit (100°C) or the lower limit (-50°C) of the probes is exceeded. A probe figured as sanitary probe will not
trigger any alarms if domestic hot water is not enabled.
NOTE:
If the pressure switch on the machine detects a pressure exceeding 42.8 bar the driver and the compressor are powered off and probe error E641
is displayed (Compressor discharge probe fault).
The alarm is cleared when the pressure drops below 34 bar.
14.6 [E801] TIMEOUT INVERTER
When the machine's controller does not communicate with the driver board of the compressor, a timeout alarm is triggered to avoid losing
control of the system.
14.7 [E851 ÷E971] INVERTER
The inverter has its own list of alarms.
14.8 [E00] REMOTE ON/OFF (WARNING)
If the unit is controlled by a remote digital input. See par. 10.4.1
14.9 [E001] HIGH-PRESSURE
If the pressure transducer on the unit detects a pressure higher than 41.5 bar the alarm is triggered.
In this case the compressor is blocked immediately. The alarm is reset when the pressure drops below 32.5 bar. If the alarm triggers more than
3 times an hour, it must be reset manually.
14.10 [E002] LOW-PRESSURE
In chiller mode, if the pressure transducer on the unit detects a pressure lower than 3.5 bar, the alarm is triggered.
In heat pump mode, if the pressure transducer on the unit detects a pressure lower than 1.3 bar, the alarm is triggered.
The alarm is reset when the pressure rises 2.0 bar above the triggering threshold.
A bypass time of 60 seconds is counted every time the compressor is activated.
When the alarm is triggered, it blocks the compressors of the circuit.
The alarm is reset manually if it triggers 3 times an hour.
14.11 [E008] DRIVER LIMITATION
If the compressor does not reach the speed at the intended ramp value within 30 minutes, the alarm is triggered and the compressor switches
off for safety purposes.
The alarm is reset manually if it triggers 3 times an hour.
14.12 [E041] 4-WAY VALVE
Manually reset alarm, it identifies malfunctioning of the 4-way reversing valve.
The alarm does not trigger for a bypass time of approximately 180 seconds from start-up of the compressor.
• In heating and sanitary mode, the alarm is triggered when, the bypass time having elapsed, the water delivery temperature is lower than
the water return temperature of the heat pump - 1°C.
• In cooling mode, the alarm is triggered when, the bypass time having elapsed, the water delivery temperature is higher than the water
return temperature of the heat pump + 1°C.
Picco R32
Heat pumps inverter air/water with axial fans
31