Vaillant VWL 57/5 IS Operating, Installation And Maintenance Instructions

Also see for VWL 105/5 AS S2: Operating instructions Operating instructions Operating instructions

Contents

Appendix0020257319_02 Hydraulic station Installation and maintenance instructions 57Code Meaning Cause RemedyF.1100 Immersion heater: Safety cut-outopenThe safety cut-out on the electric back-up heater is open due to:– Insufficient volume flow or air in thebuilding circuit– The immersion heater is operatedwhen the building circuit is not filled– Immersion heater operation at flowtemperatures above 95 °C trips thesafety fuse of the safety cut-out andrequires that the fuse be replaced– Feed-in of external heat into thebuilding circuit– Check the circulation in the buildingcircuit pump– If required, open the stopcocks– Replace the safety cut-out– Reduce or stop the external heatthat is entering– Check that the dirt filter that is inplace is permeableF.1117 Compressor: Phase failure – Defective fuse– Incorrect electrical connections– Mains voltage too low– Compressor/low tariff power supplynot connected– Blocked by energy supply companyfor over three hours– Check the fuse– Checking the electrical connections– Check the voltage at the heat pumpelectrical connection– Reduce energy supply companyanti-cycling time to under three hoursF.1120 Immersion heater: Phase failure – Electric back-up heater defective– Poorly tightened electrical connec-tions– Mains voltage too low– Check the electric back-up heaterand its power supply– Check the electrical connections– Measure the voltage at the electricalconnection for the electric back-upheaterF.9998 Connection fault: Heat pump – eBUS cable not connected or con-nected incorrectly– Outdoor unit without supply voltage– Check the connection pipes betweenthe power supply PCB and controlPCB on the indoor and outdoor unitJ 5.4 kW back-up heaterApplies for products with a heat output of 5 kW and 7 kWInternal control of the outputlevelsPower consumption Set value0 0.0 kW1 0.9 kW 1 kW2 1.1 kW3 1.7 kW4 2.0 kW 2 kW5 2.8 kW 3 kW6 3.7 kW 4 kW7 4.5 kW 5 kW8 5.4 kW 6 kWK 8.54 kW back-up heater at 230 VApplies for products with a heat output of 12 kWInternal control of the outputlevels at 230 VPower consumption Set value0 0.0 kW1 0.7 kW 1 kW2 1.2 kW3 1.8 kW 2 kW4 2.2 kW 3 kW5 3.2 kW6 3.8 kW 4 kW