
Page 8
R-2065
SERVICE AND MAINTENANCE SUGGESTIONS
SYMPTOMS - POSSIBLE CAUSES OR CORRECTION
1. Impossible to light pilot
a.
If using piezo ignitor, check electrode location.
b.
Remove nut at orifice and check for gas.
c.
If gas available, check for blocked orifice or pilot.
2. Pilot outage
a.
Proper size of pilot flame.
b.
Defective or weak thermocouple.
3. Pilot flames but goes out when knob is released
a.
Pilot flame not covering the thermocouple properly.
b.
Defective thermocouple.
c.
Defective magnet in the safety section of valve.
4. Poor thermostat control
a.
Thermostat needs calibrating.
b.
Defective thermostat section.
5. Noisy blower
a.
Tighten blower screws.
b.
Check blower wheel in the open for balance.
6. Yellow main burner flame
a.
Remove main burner to check for obstructions in throat, ports
and orifices.
b.
Install new main burner orifice and pilot orifice.
c.
Check gas valve for leaking.
d.
Open the air shutter on the main burner in order to increase the
amount of primary air.
7. Yellow pilot flame
a.
Small yellow tip not objectionable.
b.
Remove pilot orifice. Check and clean.
8. Pilot and main burner goes out after burning a few minutes
a.
Improper venting of flue products. Relight and check for im-
proper venting.
b.
If vented properly, check vent safety switch, replace if defective.
9. Burner flashes- back or “pops” and burns at main burner orifice
a.
Examine main burner for defects.
10. Inoperative blower
a.
Check fan control by shorting across terminals.
b.
Check for blower wheel bind by removing wheel and operating
motor.
c.
Check for frozen bearings due to lack of oil.
11. On Propane Gas, if a whistling noise (resonation) occurs
a.
Close the air shutter on the main burner in order to reduce the
amount of primary air.
INDEX
PART
NO.
NUMBER
DESCRIPTION
INDEX
PART
NO.
NUMBER
DESCRIPTION
1
662015
CONTROL KNOB
2
R-2708
PIEZO IGNITOR
3
RH-702
CONTROL ROD BRACKET
4
R-2706
ECO SWITCH
5
871018
CABLE ASSEMBLY
6
RH-812
CONTROL ROD
7
R-2701
GAS VALVE (LPG)
7
R-2700
GAS VALVE (NAT)
8
RH-811
VALVE BRACKET
9
RH-705
CASING SIDE
10
RH-708
AIR INLET BAFFLE
11
P-86-38N
MAIN BURNER ORIFICE (RH-35-5
NAT)
11
742155
MAIN BURNER ORIFICE (RH-25-5
NAT)
11
742260
MAIN BURNER ORIFICE (RH-35-5
LPG)
11
742238
MAIN BURNER ORIFICE (RH-25-5
LPG)
12
P-205
MANIFOLD ASSEMBLY
13
RH-818
DIVERTER ASSEMBLY
14
RH-801
DOWN DRAFT SHIELD
15
RH-799
DIVERTER PLATE
16
DV-951
CASING TOP
17
RH-819
INNER CASING ASSEMBLY (RH-
25-5)
17
RH-822
INNER CASING ASSEMBLY (RH-
35-5) W/INSULATION
18
RH-705
CASING SIDE
19
RH-691
COMBUSTION CHAMBER
ASSEMBLY (RH-35-5)
19
RH-701
COMBUSTION CHAMBER
ASSEMBLY (RH-25-5)
20
712098
GASKET - LIGHTING HOLE
21
DV-781
LIGHTING HOLE COVER
22
DV-064
COVER PLATE
23
RH-682
CASING FRONT
24
RH-737
BURNER (RH-25-5)
24
RH-738
BURNER (RH-35-5)
25
672056
THERMOCOUPLE 36"
26
762141
PILOT BURNER WITH ORIFICE
(NAT)
26
762247
PILOT BURNER WITH ORIFICE
(LPG)
27
RH-817
PILOT TUBING WITH FERRELLS
28
732065
ELECTRODE AND WIRE
NOT SHOWN 652121
REGULATOR (NAT)
NOT SHOWN 652211
REGULATOR (LPG)
NOT SHOWN R-2738
OPERATOR/REGULATOR (NAT)
NOT SHOWN R-2739
OPERATOR/REGULATOR (LPG)
NOT SHOWN 742158
PILOT ORIFICE (NAT)
NOT SHOWN 742266
PILOT ORIFICE (LPG)
NOT SHOWN R-2707
JUNCTION BLOCK ADAPTOR/ECO
SWITCH
NOT SHOWN UH-441
VENT SAFETY SWITCH/ECO
HOLE COVER PLATE
USE ONLY MANUFACTURER’S REPLACEMENT PARTS. USE OF ANY OTHER PARTS COULD CAUSE INJURY OR DEATH.