PHNIX PC4001

PHNIX PC4001

PHNIX PC4001 is a main controller / Steuerplatine für Geräte wie Luft-Wasser-Wärmepumpen, central air conditioners, industrial water chillers, and printing machines. It is a dedicated embedded main control board proprietary to PHNIX, commonly used in commercial heat pumps and industrial refrigeration units.

1. Grundlegende Informationen

Marke: PHNIX

Modell: PC4001

Typ: Main controller (control board) for heat pump / refrigeration units

Anwendbare Ausrüstung:

PHNIX commercial air-to-water heat pumps (hot water / Heizung / ultra-low temperature Polaris series)

Industrial water chillers / refrigeration units

Printing machines, central air conditioners, pool heat pumps

Nature: Dedicated main control board with pre-programmed firmware, not a general-purpose PLC.

2. Hauptfunktionen (Heat Pump / Refrigeration Control)
3. Multi-mode Control

Heating / Kühlung / Hot Water / Constant Temperature Dehumidification

2. Temperature Control

Closed-loop control of supply and return water temperature

Monitoring of ambient temperature, discharge temperature, and coil temperature

3. Schutzfunktionen

High pressure, low pressure, Überlast, Phasenverlust, phase sequence, anti-freeze, high discharge temperature

Sensor fault, flow switch, and compressor protection

4. Compressor Management

Sequencing, time delay, and balanced start/stop for 1-3 Kompressoren

5. External Device Control

Four-way valve, electronic expansion valve, fan, water pump, electric heater

6. Kommunikation & Anzeige

Supports wired controller (Modell 95005 Serie)

Some versions support Modbus-RTU

3. Typical Hardware Specifications

Stromversorgung: AC 220V ±15% / 380V

Inputs:

NTC 10KΩ temperature sensors (multiple)

High pressure switch, low pressure switch, flow switch, phase sequence protector

Outputs (Relais / Thyristor):

1-3 compressor outputs

Four-way valve, fan, water pump, electric heater, Alarm

Anzeige: Onboard LED run/fault indicators

Controller Interface: Dedicated 4/5-pin connector (for Model 95005, usw.)

Abmessungen: Standard PCB board (ca. 150×120mm)

Montage: Screw-mounted inside the unit cabinet

4. Common Replacement / Compatible Models

PC4001: Basic universal version

430084: Common PHNIX heat pump mainboard (same-platform replacement)

20000-430084: Extended part number for ordering

PC4002 / PC4003: Upgraded versions (more compressors / verbesserter Schutz)

5. Common Fault Codes

E1: High pressure protection

E2: Low pressure protection

E3: Supply water temperature sensor fault

E4: Return water temperature sensor fault

E5: Überlast / Überstrom

E6: Phase sequence error / Phasenverlust

E7: Anti-freeze protection

E8: Excessively high discharge temperature

6. Difference from Carlo Gavazzi PC4001

Carlo Gavazzi PC4001: Phase sequence / phase loss protection relay (electrical protection)

PHNIX PC4001: Main control board for complete heat pump system (system control)

The two are completely different and not interchangeable.

7. Bestellung & Wartung

Original Ordering: Through PHNIX distributors (mostly using extended part number: 20000-430084)

Wartung: Requires original factory firmware; board replacement is generally the only solution.

PHNIX PC4001 Mainboard: Complete Installation & Commissioning Manual

The PC4001 is a dedicated main control board for PHNIX commercial heat pumps / water chillers (not a general-purpose relay). Below is the factory-level full procedure for installation, Verdrahtung, power-on, parameter setting, and troubleshooting (applicable to ultra-low temperature heat pumps, Warmwasserbereiter, Kältemaschinen, and printing machine units).

1. Vorbereitung vor der Installation

1.1 Model Confirmation & Kompatibilität

Mainboard: PC4001 / 20000-430084 (extended part number)

Anwendung: PHNIX 3-25HP commercial heat pumps / water chillers (single / dual compressor)

Wired controller: Matching Model 95005 wired controller (4/5-core cable)

Stromversorgung: Three-phase AC 380V / Single-phase AC 220V (depending on unit)

1.2 Werkzeuge & Zubehör

Kreuzschlitzschraubendreher, Abisolierzange, Multimeter, voltage tester

Crimp terminals, Kabelbinder, Isolierband

NTC 10KΩ temperature sensors (supply water / return water / discharge / ambient / Spule)

Phase sequence protector (PC4001 has built-in phase loss / phase sequence protection)

1.3 Sicherheitsvorkehrungen

Install with power disconnected: Turn off main power and attach lockout tag

Anti-static: Touch grounded metal to discharge static; do not operate with wet hands

Separate strong and weak current: Route power / compressor cables separately from signal wires

2. Mechanical Installation (Mainboard Mounting)
3. Mounting Location: Inside the unit’s electrical cabinet, away from compressors, Fans, and high-temperature areas
4. Fixierung: Secure the PCB with 4 M3 screws (do not overtighten to avoid cracking the PCB)
5. Orientation: Mount vertically for heat dissipation; keep away from water accumulation / condensation
6. Clearance: Leave ≥3cm ventilation space around the board
7. Standardverkabelung (PC4001 Terminal Definitions)

3.1 Leistungsaufnahme (Dreiphasig 380 V)

L1, L2, L3: Three-phase power input (correct phase sequence)

N: Neutral wire

PE: Schutzerde (must be connected for shock and interference protection)

3.2 Compressor Outputs (1-2 Einheiten)

COMP1: Compressor 1 (Stromführender Draht)

COMP2: Compressor 2 (Stromführender Draht)

COM: Common neutral

OVL: Überlastschutz (series-connected normally closed thermal relay)

3.3 External Device Control

FV: Four-way valve (Heizung / cooling switching)

FAN: Condensing fan

PUMP: Water pump / flow switch

EH: Electric heater (optional)

ALARM: Fault alarm output (dry contact)

3.4 Temperature Sensors (NTC 10KΩ)

T1: Supply water temperature (erforderlich)

T2: Return water temperature (erforderlich)

T3: Discharge temperature (erforderlich)

T4: Umgebungstemperatur

T5: Coil temperature

3.5 Protection Switches (Normally Closed Inputs)

HP: High pressure switch (erforderlich)

LP: Low pressure switch (erforderlich)

FLOW: Flow switch (erforderlich)

PH: Phase sequence / Phasenverlust (built-in, can be connected externally in series)

3.6 Wired Controller Interface

CN5 / CN6: 4-core cable (VCC, GND, DATA, CLK)

Cable length: ≤15 meters, shielded cable, kept away from high-voltage lines

3.7 Wiring Guidelines

All terminals use crimp terminals + tinning to prevent loosening

Route strong and weak current in separate ducts; shield of signal cables grounded at one end

Compressor wires ≥2.5mm², signal wires 0.75mm²

Secure wiring with cable ties to avoid abrasion by fans or compressors

4. Pre-power Inspection (Critical)
5. Multimeter Checks:

L1-L2-L3: Balanced three-phase voltage (380V±5%)

Insulation: Compressor / fan insulation to ground ≥ 2MΩ

2. Phase Sequence Check:

Use phase sequence meter to confirm L1-L2-L3 is positive phase sequence

Incorrect phase sequence triggers E6 on PC4001

3. Sensor Check:

All NTC sensors measure approx. 10KΩ at room temperature

No short circuit or open circuit in sensor cables

4. Protection Switches:

High pressure / low pressure / flow switches are normally closed and conducting

No bypassed protections (do NOT short HP / LP / FLOW)

5. Power-on Commissioning (Wired Controller Operation)

5.1 First Power-on

Turn on main power → Mainboard LED lights up, wired controller shows boot screen

Self-test: 30 Sekunden, checking sensors, inputs/outputs, and protections

5.2 Unit Parameter Setting (Required)

To enter parameters: Long press [SET] on wired controller for 5 seconds → Password [6666]

P00: Unit type selection

0: Heat pump water heater

1: Heat & cool heat pump

2: Industrial water chiller

P01: Number of compressors (1/2)

P02: Rated supply water temperature (hot water 55℃ / chiller 7℃)

P03: Temperature differential (2-3℃)

P04: Anti-freeze temperature (5℃)

P05: High discharge temperature protection (110-120℃)

P06: Lüftersteuerung (0: constant run / 1: thermostatic control)

P07: Steuerung der Wasserpumpe (0: unit interlock / 1: constant run)

5.3 Calibration & Testing

1. Temperature Calibration:

Compare multimeter readings with controller display → Calibrate in P20-P24

2. Manual Test (Service Mode):

Long press [MODE + OK] für 5 seconds → Manual output mode

Test sequentially: COMP1, COMP2, FV, FAN, PUMP, ALARM

Verify normal pull-in, no short circuit, no abnormal odor

5.4 Phase Sequence & Protection Test

Disconnect any phase → Immediate E6 (Phasenverlust)

Reverse phase sequence → E6 (phase sequence error)

Open high pressure switch → E1 (high pressure)

Disconnect supply water sensor → E3 (sensor fault)

6. Operational Commissioning
7. Mode Selection: Hot Water / Kühlung / Heating
8. Temperature Setting:

Hot water: 50-55℃

Chilled water: 7-12℃

Heating: 45-55℃

3. Monitoring:

Compressor starts after 3-minute delay (prevents frequent cycling)

Discharge temperature 60-90℃ (≤110℃)

Pressure levels:

Kühlung: High pressure 12-18bar, low pressure 3-5bar

Heating: High pressure 18-25bar, low pressure 1.5-3bar

4. Protection Operation:

Over-temperature / over-pressure → immediate shutdown with corresponding fault code

Fault lockout: Reset by power cycle or controller [Reset]

7. Common Fault Codes & Lösungen

E1: High pressure protection → Check dirty condenser, fan, high pressure switch

E2: Low pressure protection → Check insufficient refrigerant, Leckage, low pressure switch

E3: Supply water sensor fault → Check T1 wiring, damaged sensor

E4: Return water sensor fault → Check T2

E5: Überlast / overcurrent → Check compressor, Thermorelais, Stromspannung

E6: Phase sequence / phase loss → Correct phase sequence, check three-phase input

E7: Anti-freeze protection → Check water temperature, pump, anti-freeze settings

E8: High discharge temperature → Check refrigerant, heat dissipation, discharge sensor

8. Key Difference from Carlo Gavazzi PC4001

PHNIX PC4001: Complete heat pump main control board (Kontrolle + Schutz)

Carlo Gavazzi PC4001: Phase sequence relay (only phase loss / phase sequence protection)

Not interchangeable

9. Delivery List

PC4001 mainboard

Handbuch / parameter sheet

Wired controller (95005)

Sensoren (T1/T2/T3)

Terminal kit

PHNIX PC4001 Complete Parameter Setting Manual (Using 95005 Regler)

The PC4001 is matched with the Model 95005 wired controller; all parameters are set via the controller.

Core steps: Long press SET 5s → Password 6666 → Select P parameter → Modify → Save

1. Entering Parameter Settings (Essential Steps)

1.1 Enter Menu

Controller on normal standby screen

Long press [SET] key for 5 Sekunden

Display shows P00, enter password: 6666

Press [OK] to enter parameter list

1.2 Button Functions

[SET]: Confirm, enter, up / +

[C/F]: Down / -, switch

[MODE]: Exit, back

[OK]: Save, lock

1.3 Parameter Editing Flow

1. Press [SET / C/F] to select parameter (P00-P30)
2. Press [SET + C/F] together → value flashes
3. Press [SET / C/F] to adjust value
4. Press [SET + C/F] together again → save (stops flashing)
5. Long press [MODE] für 3 seconds → exit menu
6. Core Basic Parameters (P00-P09, Required)

P00 Unit Type (Most Important)

0: Heat pump water heater (Standard)

1: Heat & cool heat pump

2: Industrial water chiller

P01 Number of Compressors

1: 1 compressor

2: 2 Kompressoren

P02 Rated Set Temperature

Hot water: 50-55℃

Heating: 45-55℃

Chilled water: 7-12℃

P03 Temperature Differential (On/Off Offset)

Empfohlen: 2-3℃

Beispiel: Set 55℃, stop at 57℃, start at 54℃

P04 Anti-freeze Temperature

Default: 5℃

Water temp <5℃ → auto start pump / low-temp heating

P05 High Discharge Temperature Protection

Default: 110℃

Empfohlen: 105-115℃ (immediate shutdown if exceeded)

P06 Fan Control Mode

0: Constant run (always on in cooling / Heizung)

1: Thermostatic control (stops at set temp, restarts low)

P07 Pump Control Mode

0: Unit interlock (pump runs when compressor runs)

1: Constant run (runs continuously when powered)

P08 Compressor Time Delay Protection

Default: 3 Minuten

Reichweite: 0-5 Minuten (prevents frequent starting)

P09 Current Protection (Überlast)

Set to compressor rated current × 1.1-1.2

Overcurrent → E5 overload protection

3. Temperature Calibration Parameters (P20-P24)

P20 Supply Water Temp (T1) Calibration

Actual temperature – Displayed temperature = Calibration value

Beispiel: Actual 50℃, display 52℃ → set -2

P21 Return Water Temp (T2) Calibration

P22 Discharge Temp (T3) Calibration

P23 Ambient Temp (T4) Calibration

P24 Coil Temp (T5) Calibration

Reichweite: -10～+10℃

Must save and exit after calibration

4. Schutz & Advanced Parameters (P25-P30)

P25 High Pressure Protection Value

Kühlung: 20-22 bar

Heating: 25-28 bar

P26 Low Pressure Protection Value

Kühlung: 1.5-2 bar

Heating: 1.0-1.5 bar

P27 Defrost Temperature / Time

Defrost start: -3～-5℃

Max defrost duration: 10 Minuten

P28 Electric Heating Enable Temperature

Beispiel: ≤40℃ allows electric heater activation

P29 Modbus Address (Optional)

Default: 1

Stellen Sie auf ein 1, 2, 3… for multi-unit networking

P30 Restore Factory Defaults

0: Do not restore

1: Restore defaults (use with caution)

5. Manual Test Mode (For Service)

Enter Manual Test

Normal screen → Long press [MODE + OK] für 5 Sekunden

Display shows TEST

Manual Output Test

Press [SET / C/F] to select output:

1. COMP1: Compressor 1
2. COMP2: Compressor 2
3. FV: Four-way valve
4. FAN: Fan
5. PUMP: Water pump
6. ALARM: Alarm

Press [OK] to switch on/off

Long press [MODE] to exit test

6. Häufige Fehler & Parameter Adjustments

E1 High Pressure: Increase P25 by 1-2 bar or clean condenser

E2 Low Pressure: Decrease P26 by 0.5 bar or recharge refrigerant

E3/E4 Sensor Fault: Calibrate P20/P21 or replace NTC 10K

E6 Phase Sequence: Swap any two of L1/L2/L3

Frequent Cycling: Increase P03 differential to 3-5℃

E8 High Discharge Temp: Set P05 to 110℃ or check cooling

7. Quick Parameter Setting Table (Direct Input)

8. Notizen

Parameters must be saved after editing (value stops flashing)

Do NOT short protection terminals (HP/LP/FLOW)

Use precision multimeter for temperature calibration

Lock parameters after commissioning: Change password to 8888 to prevent accidental changes