Irene · Priority
Heat Pump Icing Up in Irene
Ice forms on the evaporator coil and does not clear between cycles. This page covers how we diagnose and repair it on heat pumps in Irene.
This fault is normally treated as priority work because the plant is still running but is damaging itself or wasting energy while it does.
Guest houses, offices and residential estates with mixed gas and heat pump hot water. Where a site runs on borehole water, hardness and iron content shorten service intervals considerably and are worth testing before setting a maintenance plan.
- Area
- Irene, Midrand & Centurion
- Equipment
- Heat pumps
- Call
- 069 268 0988
What we find here
Likely causes
- Defrost sensor or board failure
- Low refrigerant charge
- Restricted airflow from a dirty coil
- Fan motor running slow or intermittently
- Unit sited in a cold, unventilated position
How it is confirmed
Diagnostic sequence
- Observe a full defrost cycle
- Check defrost sensor resistance
- Airflow and coil condition inspection
- Charge verification
Repair route
Repair services in Irene
Heat Pump Repairs Irene
Fault-finding and repair of air-source hot water and pool heat pumps.
Industrial Heat Pump Repairs Irene
High-capacity and cascade heat pump repairs for plants and process water.
Commercial Heat Pump Repairs Irene
Hotel, guesthouse, gym and complex heat pump repairs with minimal downtime.
Heat Pump Maintenance Irene
Scheduled servicing that keeps COP high and prevents compressor failure.
Heat Pump Installation Irene
Sizing, plumbing, electrical and commissioning for new heat pump plant.
Heat Pump Regassing Irene
Leak detection first, then correct-charge regassing by weight.
Coverage
Nearby areas
- Heat Pump Icing Up Beaulieu
- Heat Pump Icing Up Beaulieu Estate
- Heat Pump Icing Up Noordwyk
- Heat Pump Icing Up Noordwyk Ext
- Heat Pump Icing Up Crowthorne
- Heat Pump Icing Up Crowthorne AH
- Heat Pump Icing Up Glenferness
- Heat Pump Icing Up Glenferness AH
- Heat Pump Icing Up Halfway Gardens
- Heat Pump Icing Up Halfway House
FAQs
Frequently asked questions
What causes heat pump icing up?
The usual causes are defrost sensor or board failure, low refrigerant charge, restricted airflow from a dirty coil, fan motor running slow or intermittently. Which one it is can only be confirmed by measurement, not by symptom alone.
How do you diagnose it?
Observe a full defrost cycle; Check defrost sensor resistance; Airflow and coil condition inspection; Charge verification. The readings are recorded so the repair decision is based on data.
Can I keep using the system in the meantime?
Usually yes, for a short period, but efficiency and component life are both being lost while the fault persists.
Do you attend this fault in Irene?
Yes. Midrand and Centurion sit between the Johannesburg and Pretoria routes, so attendance windows are usually the shortest of any area. Gas boiler servicing and heat pump maintenance often combined in one visit.
Heat Pump Icing Up — Irene
Gas boiler servicing and heat pump maintenance often combined in one visit.