patio NPC05, Assembly Instructions Manual

© 

AEI CORPORATION 2005

23

NATURAL GAS HEATER TROUBLE SHOOTING GUIDE

If you are having this problem: 

If this condition exists: 

You will need to do the following: 

The pilot light won’t light 

1) Shut-Off Valve at House gas is off. 
 
 
 
2) Quick Disconnect couplers are not 
    engaged properly. 
 
 
3) Air or debris in fuel lines. 
 
 
 
4) Igniter is not sparking. 

1) Open shut off valve. Turn black knob 
    on valve in counter-clockwise 
    direction 
 
2) Check quick disconnect/nipple 
    engagement. Pull back sleeve and 
    engage fully.  
 
3) Purge air by holding control knob at 
   “PILOT” position for at least two 
    minutes until you smell gas. 
 
4) Use match to light pilot through 
    access hole at base of heater head.   
    Seek service or check igniter wire    
    connections.  Replace igniter or wire 
    if required. 

The pilot, after initial lighting, 
will not stay lit 

1) There may be a leak in the system. 
 
 
2) Dirt build-up around pilot orifice. 
 
 
3) Thermocouple is not operating 
    properly. 
 
 
 
4) High wind condition blowing out pilot 
    flame. 
 
 
 

1) Check connections at hose to feed  
    line and feed line to heater head.   
 
2) Clean pilot orifice with compressed 
    air. 
 
3) Depress Knob in “Pilot” position for  
    full 30 seconds. Remove emitter grid 
    and     replace thermocouple.  Use 
    only Patio Comfort thermocouples  
    and parts. 
 
4) Put heater in more protected 
    location.  Do not use heater in winds  
    in excess of 10 MPH.  Do not use  
    heater in high wind conditions, rain,  
    or at temperatures below 40° F. 

 
 
Main burner will not light 

1) Gas Pressure is low. 
 
 
2) Blockage in main burner orifice. 
 
 
 
 
3) Control knob is not in “ON” position. 

1) Check pressure of fuel line.  Heater 
    requires minimum 6” W.C. to shut off. 
 
2) Clear Spider web or other blockage. 
    . 
 
3) Turn knob to “ON” Position. 

Burner flame Is low or emitter 
grid does not glow evenly. 
Please note:  
 
Bottom 1-2” of emitter grid 
normally does not glow.

 
1) Gas pressure or gas volume  is too 
low.    Control knob not set to full  “ON” 
Position 
 
2) Heater is not on a level surface 
 

1) Have gas pressure checked by gas  
    technician. Turn knob to “ON”. 
 
2) Reposition heater onto hard and level 
    surface. 

Carbon build up on emitter 
grid or thick black smoke 
coming from head 

1) Dirt or film on reflector or emitter 
    grid. 
2) Unit is not being operated in  
    full “ON: 
3) Blockage in burner head, venturi 
    tube, or orifice. 
 

1) Gently clean reflector or emitter. 
    Clear spider webs or debris. 
2) Heater must be operated in  
    FULL “ON” setting. 
3) Remove burner and check for burner 
    ports for blockage.