Vaillant fault code F.532
Fault code F.532 on a Vaillant heat pump (including geoTHERM 3 kW) means: Isolating valve was not opened, emitter circuit pump defective, all consumers in the heating system are closed, flow too low for detection by the flow rate sensor (< 120 l/h)". Reset the appliance once. If the code comes back, a part is usually faulty, often a temperature sensor. You can check the water pressure and settings yourself; leave work on gas-carrying parts to a certified gas engineer.
After a safety alert (gas, flue gas, combustion), reset no more than once and call in a certified gas engineer. If you smell gas, call your national gas emergency number or 112 immediately.
Cause
Fault code F.532 on a Vaillant heat pump indicates: Isolating valve was not opened, emitter circuit pump defective, all consumers in the heating system are closed, flow too low for detection by the flow rate sensor (< 120 l/h)".
Applies to
Vaillant geoTHERM 3 kW, VWS 36/4.1 230V.
Fault code F.532 on other Vaillant series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- F.532 on flexoTHERM, VWF 117/4, VWF 157/4, VWF 197/4, VWF 57 /4, VWF 87/4: Isolating valve was not opened. Emitter circuit pump defective. All consumers in the heating system are closed. Flow rate too low for detection by the flow rate sensor (< 120 l/h)".
- F.532 on flexoCOMPACT exclusive, VWF 118/4: Isolating valve was not opened, emitter circuit pump defective, all consumers in the heating system are closed, flow rate too low for detection by the flow rate sensor (< 120 l/h), thermostatic valve(s) defective, no bypass present in systems without buffer, bypass incorrectly set or defective, air in the heat pump, minimum capacity of the pump or pump defective, condenser fouled, existing dirt filter blocked.
- F.532 on aroTHERM Monoblock, VWL 115/2 A 400 V, VWL 155/2 A 400V, VWL 55/2 A 230V, VWL 55/3 A 230 V, VWL 85/2 A 230 V: Heating circuit not completely vented, dirt filter in return missing or blocked, lack of water - pressure loss in the heating circuit, pump defective: Check the specific flow rate in the heating circuit in the sensor/actuator test.
Matching parts
Vaillant parts are available from Instalpunt; shipping to EU countries from €17.95 (€24.95 for more distant countries), usually 3–5 working days.
Parts by Vaillant series: ecoTEC plus · ecoTEC pro.
Based on the cause, these original Vaillant parts fit (always check the type number of your appliance):
- Vaillant pressure sensor VHR18-22/3C24-28/3C VHR CW3 4/3 for ecoTEC plus and ecoTEC pro etc. € 20.95
- Vaillant temperature sensor € 31.36
- Vaillant sensor for e.g. aguaFLOW VPM 20/25/2W 0020085154 € 121.53
Further reading on this cause
Other Vaillant codes with the same cause
- F.022 — Water pressure sensor defective, open circuit in the wiring harness, solenoid valve of…
- F.042 — Sensor not connected or sensor input short-circuited
- F.073 — Wire to the water pressure sensor is open circuit or has a short circuit
- F.086 — Contact S20 on the heat pump main PCB (HMU) open, incorrect setting of the maximum…
- F.094 — Flow rate sensor not connected or sensor input short-circuited
- F.1288 — Sensor defective or not correctly connected to the VWZ AI heat pump control module.
Fix it yourself or call an engineer?
Always consult the manual for your appliance and work safely. If in doubt or if the fault comes back, call in a qualified professional. A question about a part? Write to us at info@instalpunt.nl.
Frequently asked questions
What does Vaillant heat pump fault code F.532 mean?
Isolating valve was not opened, emitter circuit pump defective, all consumers in the heating system are closed, flow too low for detection by the flow rate sensor (< 120 l/h)".
How do I fix fault code F.532 on a Vaillant heat pump?
First check the cause described above. Then restart the appliance using the reset button. If the message comes back, a part usually needs replacing or the fault needs to be repaired by a qualified professional.
Which parts do I need for Vaillant fault code F.532?
That depends on the exact cause. In the Vaillant parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code F.532 myself?
You can reset the appliance and check things like the water pressure or settings yourself. Work on gas-carrying parts must be left to a certified gas engineer.
All Vaillant heat pump faults and codes at a glance →