EU delivery from € 17.95 Stock items ordered before 14:00, dispatched the same working day Delivery across the EU WebwinkelKeur certified Pay securely by card & Klarna
WhatsApp WhatsApp
Account
Log in Business login Create business account
Basket
★★★★★8,8/1052 reviews · WebwinkelKeur verified“snelle levering” — Jan Fakkeldij“Motor bedteld voor kunsthaard. Zeer duidelijk welke ik moest bestellen en zeer snel thuis.” — Bert RoosenburgAll reviews →
Heat pump outdoor unit
Heat pump fault codes

NIBE heat pump alarms: alarm codes, causes and parts (page 2 of 2)

Codes 151 to 260 of the 260 alarm codes for NIBE. Looking for a specific code? Use the search on the first page.

NIBE heat pump alarm codes 151 to 260 of 260

The code list is split over 2 pages. Looking for a specific code? Use the search on the first page: it searches all 260 codes in one go.

CodeCause
32Sensor error BS1: Empty
321Communication error EB103/8-GP12 (AXC): Communication with accessory card for GP12s missing
323Sensor error EQ1-BT25 external cooling flow: Sensor not connected/defective (external cooling flow)
323Inverter alarm: Temporary alarm on the external input of the inverter occurred 3 times within 2 hours or has been continuously active for 1 hour
325Inverter alarm Type I: Phase voltage too high, for longer than 1 hour
325Defrost element maximum thermostat tripped: Temperature limiter/maximum thermostat FD3 has tripped
327Inverter alarm Type I: Compressor phase not present, for longer than 1 hour
329Inverter alarm Type II: Maximum operating temperature of inverter reached (insufficient cooling), 3 times within 2 hours or permanent
331Inverter alarm Type II: Maximum operating temperature of inverter reached (insufficient cooling), 3 times within 2 hours or permanent
333Inverter alarm Type II: Temporary internal inverter fault, 3 times within 2 hours or longer than 1 hour
333Maximum heat pump flow temperature reached: Outgoing temperature of heat pump has exceeded the max. temp. on BT2 and/or BT63. Possible causes:Incorrectly connectedIncorrectly adjusted flowEmitter system or buffer too smallIncorrect heating curve selected
335Inverter alarm Type III: No function (false alarm)
336Sensor error EP44 BT2 flow sensor (climate system 5): Sensor not connected or defective (flow sensor, emitter system 5)
337Sensor error EP46 BT2 flow sensor (climate system 7): Sensor not connected or defective (flow sensor, emitter system 7)
337Inverter alarm Type II: Voltage at inverter output temporarily too high
34Sensor error EP30-BT54: Sensor not connected or defective (solar panel)
340Inverter alarm Type III: No function (false alarm)
340Anti-freeze activated supply air BT22 : Supply air (BT22) is below 11°C
342Inverter alarm Type III: No function (false alarm)
343Low outgoing water temperature: Low outgoing temperature in cooling mode
344Inverter alarm Type III: No function (false alarm)
346Inverter alarm Type III: No function (false alarm)
346Repeated high pressure fault
349Sensor error EQ1-BT50: Room sensor for cooling accessory not connected or defective
351Uncertain sensor measurement: Uncertain sensor deviation of source sensors BT10 and BT11. Difference greater than 2 degrees during calibration.
353Uncertain sensor measurement: Uncertain sensor deviation of source sensors BT3 and BT12. Difference greater than 2 degrees during calibration.
355Slave EB101: Delta T BT3-BT63 is greater than 2 degrees after calibration
357Possibly due to environmental influences/lack of cable screening
359GBM alarm. This alarm is caused by the boiler. Try to reset the alarm; if it returns, see the installation manual of the boiler
36Sensor error EP21-BT2: Sensor not connected or defective (flow sensor climate system 2)
362Sensor error EP22-BT3: Sensor not connected or defective (flow sensor, climate system 3)
364Sensor error EP44-BT3: Sensor not connected or defective (flow sensor, climate system 5)
366Sensor error EP46-BT3: Sensor not connected or defective (flow sensor, climate system 7)
368Communication error MCB PCB: No communication to MCB PCB (Base card AA2)
369Sensor error EP12-BT57: Sensor not connected or defective (collector IN, groundwater)
370Sensor error EP12-BT58: Sensor not connected or defective (collector IN, groundwater)
370Communication error ASB2 PCB: No communication to ASB2 PCB (AA23)
372The inverter has a message (solar energy): SOLAR accessory: inverter sends a message. Can be read in menu 3.1
372Permanent communication error with POOL 40 2 (AXC): No communication with accessory card
378The inverter receives too high a DC voltage (solar energy): Inverter receives a high DC voltage
38Sensor error EP23-BT2: Sensor not connected or defective (flow sensor climate system 4)
382Inverter limited for a long time: Inverter limited by temperature protection, more than 70% of the time in the last 48 hours
384Communication error with HTS40 2: Communication to accessory card missing, possibly due to an external influence/lack of cable screening
386Communication error with HTS40 4: Communication to accessory card missing, possibly due to an external influence/lack of cable screening
40Compressor phase 1 not present: Compressor phase missing or <160V for more than 30 min.
401Unknown error: The outdoor unit sends a message to the control relating to the outdoor unit
404Sensor error on EB101: Sensor error detected on EB101 of the COM interface MHI-EMMY
415Sensor error on EB101-BT15: Sensor error detected on EB101 of the COM interface MHI-EMMY
42Compressor phase 3 not present: Compressor phase missing or <160V for more than 30 min.
420Inverter alarm Type II: Empty
422Inverter alarm Type II: Temporary alarm occurred on the external input of the inverter
425Pressure switch tripped (high or low pressure): High pressure switch or low pressure switch triggered
427Inverter alarm Type III: A temporary inverter fault occurred, 3 times within 2 hours or has been continuously active for 1 hour
429Inverter alarm Type II: A temporary inverter fault occurred, 3 times within 2 hours or has been continuously active for 1 hour
431Inverter alarm Type I: Phase voltage too high, for longer than 1 hour
433Inverter alarm Type I: Phase voltage too low, for longer than 1 hour
435Inverter alarm Type I: Compressor phase not present, for longer than 1 hour
437Inverter alarm Type II: Temporary internal inverter fault, 3 times within 2 hours or longer than 1 hour
439Inverter alarm Type II: Maximum operating temperature of inverter reached (insufficient cooling), 3 times within 2 hours or permanent
44Soft starter PCB overheated: Fuses of the soft starter board defective
441Inverter alarm Type II: Maximum input voltage temporarily too high, 3 times within 2 hours or permanent
443Inverter alarm Type II: Maximum operating temperature of inverter reached (insufficient cooling), 3 times within 2 hours or permanent
445Inverter alarm Type II: Temporary internal inverter fault, 3 times within 2 hours or longer than 1 hour
447Inverter alarm Type II: Phase missing, 3 times within 2 hours or continuously for 1 hour
449Inverter alarm Type II: The compressor temporarily ran at a lower frequency than the minimum, 3 times within 2 hours or permanent
451Inverter alarm Type III: No function (false alarm)
453Inverter alarm Type II: Voltage at inverter output temporarily too high, 3 times within 2 hours or 1 hour permanent
455Inverter alarm Type II: Voltage at inverter output temporarily too high, 3 times within 2 hours or 1 hour permanent
461Inverter alarm Type II: (1-phase units only) Temporarily too high voltage supplied to inverter (>198Vac), 3 times within 2 hours or 1 hour permanent
468Inverter alarm Type III: No function (false alarm)
470Inverter alarm Type III: No function (false alarm)
472Inverter alarm Type III: No function (false alarm)
474Inverter alarm Type III: No function (false alarm)
476Inverter alarm Type III: No function (false alarm)
478Inverter alarm Type III: No function (false alarm)
480Not used: No function (false alarm)
482Inverter limited by temperature: Inverter limited by temperature protection, longer than 10 minutes
50High pressure alarm (compressor): High pressure switch repeatedly tripped
501Start-up failed, no pressure difference present: Empty
503Compressor speed too low: Empty
505The inverter has a fault (solar energy): SOLAR accessory: inverter has an earth fault
507Mains supply outside specification (solar energy): SOLAR accessory: Inverter gives an error: mains voltage frequency temporarily outside the operating range
509High ambient temperature inverter (solar energy): SOLAR accessory: Inverter ambient temperature too high
511No communication with the inverter for 5 days (solar energy): There has been no communication with the inverter for 5 days or longer. Check the installation.
52Maximum thermostat tripped (element): Auxiliary heating element maximum thermostat tripped
524Communication error PCA Acc. HTS 2: Communication with accessory card missing, possibly due to temporary environmental influences/lack of cable screening
526Communication error PCA Acc. HTS 4: Communication with accessory card missing, possibly due to temporary environmental influences/lack of cable screening
54Motor protection tripped (compressor): Motor protection tripped
56Wrong serial number set: Non-existent serial number
565Sensor error BT50 on HTS 2: Sensor error BT50 on HTS2
567Sensor error BT50 on HTS 4: Sensor error BT50 on HTS4
58Pressure switch triggered: High or low pressure sensor tripped
63Low air flow: Air velocity too low measured on BS1 sensor
65High condensate level: Alarm from external level sensor
67Anti-freeze protection supply air: Supply air (BT22) is lower than 5°C
69Air flow sensor (BS1) not calibrated: Empty
7Sensor error BT7 (DHW TOP): Sensor not connected or defective (DHW TOP)
71Permanent communication error base PCB (AA2): Empty
73Permanent communication error emitter system 2 (AXC): Empty
75Permanent communication error base PCB (AA2): Empty
77Permanent communication error emitter system 4 (AXC): Empty
79Permanent communication error FLM: Empty
86Permanent communication error with SAM 40: Empty
88Permanent communication error with solar module (AXC): Empty
90Permanent communication error source pump (AXC): Empty
92Permanent communication error DEW module (AXC, boiler): Empty
94Permanent communication error PCS44 (PCM): Empty
96Permanent communication error RMU40 climate system 1: Permanent communication error RMU40 climate system 1
98Permanent communication error RMU40 climate system 3: Permanent communication error RMU40 climate system 3
995External alarm active (AUX): An alarm relating to the selected AUX input(s)

NIBE parts are available from Instalpunt. Back to the first page with the most searched codes and frequently asked questions.

Scroll to Top