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Gas Patio Heater Troubleshooting

Heater will not turn on 
1. No power. 
2. No gas. 
3. Control module in Lock-out mode. 
1. Have authorized electrician check power supply. 
2. Have authorized gas fitter check gas supply. 
3. Reset Honeywell Lock-out. 

Heater will not turn on, but then cycles on and off 
1. Insufficient flame on ionisation rod. 
2. Drafty conditions. 
3. Insufficient earth connection between heater and control box. 
1. Check and set gas pressure. Check and clear obstruction to burner venturi and injectors. 
2. Discontinue use in high winds. 
3. Replace wiring harness and clean connections to ensure good earth. 

No gas 
1. Air in gas line.  
2. Manual shut-off valve closed. 
3. Regulator sticking. 
4. Regulator reversed. 
1. Purge line. 
2. Open valve. 
3. Replace regulator. 
4. Remove and install properly. 

Low ceramic tile surface temperature 
1. Low manifold gas pressure. 
2. Low gas inlet pressure. 
3. Orifice partially blocked with foreign matter. 
4. Combustion by-products not adequately ventilated. 
5. Manifold misaligned from excessive torque applied on pipe at installation. 
6. Gas supply piping too small. 
7. Foreign matter in venturi tube. 

Gas odor 
1. Loose pipe connection. 
2. Defective regulator. 
3. Defective manual shut-off valve.  
4. Defective gas control valve.  
5. Loose flexible hose. 
1. Check all connections with soap solution and tighten where necessary. 
2. Replace regulator. 
3. Replace manual shut-off valve. 
4. Replace gas control valve. 
5. Tighten flexible hose. 

Burning of gas/air mixture inside burner casting (flashback) 
1. Separation of ceramic tiles. 
2. Ceramic tile(s) cracked. 
3. Heater mounted at incorrect angle. 
4. Excessive drafts. 
1. Replace burner assembly. 
2. Replace burner assembly. 
3. Check angle of heater.  
4. Shield or relocate heater. 

Control assembly is overheating 
1. Heater not mounted correctly. 
1. Mount wall bracket / control housing against a vertical flat surface, always use supplied parts to mount heater. 

Carbon formation on ceramic tile surface of burner 
1. Misaligned orifice. 
2. Obstruction in venturi tube. 
3. Low gas pressure. 
4. Wrong gas supplied to heater. 
1. Consult sales agent or factory. 
2. Clean with bottle brush. 
3. Provide required pressure. 
4. Check label for type of gas required.