Troubleshooting Procedures
16021879 Rev. 0
©
2002 Maytag Appliances Company
18
Spark Module (Models RTP306 and RTP307)
The spark module for the automatic pilotless ignition
(spark) system on models RTP306 and RTP307 is
located at the bottom rear of the unit. It is housed in the
electrical box. The module is accessed by removing two
screws holding the electrical box to the unit, which
detaches the electrical box. Disconnect electrical power
before attempting to remove the box.
In the event of “NO SPARK” verify that the ignitor
ceramic is clean and the gap between ignitor and ignitor
grounding bracket dimple is 1/8” (-1/32”, +0).
1. Check AC line fuse, or circuit breaker.
2. Disconnect electricity at disconnect plug, and turn off
gas supply to cooktop.
3. Using wiring diagram, verify all terminals and wire
connections are correct and tight.
4. Set meter on VAC scale.
5. Attach one meter lead of test meter to the black wire
terminal on spark module.
6. Attach remaining lead to white wire terminal on spark
module.
7. Reconnect electricity at main disconnect plug.
8. Turn all top burner knobs to their light positions.
9. No line voltage at test meter indicates an electrical
circuit interruption before spark module.
10.If line voltage is at test meter then check ignitors.
11.If ignitors are OK; replace ignition module.
Top Burner Spark Ignitors
1. Disconnect electricity at main disconnect plug.
2. Disconnect two spark ignitor leads from spark
module terminals.
3. Set ohmmeter on the RX1 ohm scale (adjust to zero).
4. Attach one meter lead to a good ground (bare metal)
on the cooktop.
5. Touch remaining meter lead to each terminal of
ignitor lead. A continuity reading from either ignitor
lead indicates the ignitor lead is shorted to ground.
Replace ignitor lead. If no continuity reading from
either ignitor lead to ground, then proceed to Step 6.
6. Attach one meter lead to one terminal to the ignitor
lead and touch the remaining meter lead on the
opposite end of the ignitor lead that is attached to the
top burner mounting bracket. Repeat same
procedure with the other ignitor lead. No continuity on
either lead indicates an open circuit in the ignitor lead
wire. Replace ignitor lead.
Gas Pressure and Measurement
Correct burner ignition and operation depend upon
adequate gas pressure. Amana, Caloric and Modern
Maid cooktop regulators are designed to provide proper
pressure. Refer to Rating Label for pressure supply.
These units are set at the factory for natural gas. The
gas regulator and gas valves on these units may be
converted when connected to LP/propane gas.
The minimum supply pressure to the regulator must be
at least 7 inches WCP for natural gas and 11 inches
WCP for LP/propane gas. The maximum pressure
cannot exceed 14 inches WCP.
Measuring Gas Pressure
Measure gas pressure by using pressure meters and
gauges or by using a manometer. The following
directions apply to using a manometer. If pressure
meters and gauges are used, follow directions supplied
with those units.
Using the Manometer
A manometer is a U-shaped tube of clear plastic or
glass. Between the two “legs” of the U is a scale
measured in inches.
Fill the tube with water until the water level reaches “0”
on both legs. Connect one leg of the tube to the range
manifold or gas valve orifice. Leave the other leg open.
Applying gas pressure pushes down the water on one
side and up on the other side.
The procedure for taking a gas pressure measurement
is simple. Connect the tubing from one leg of the
manometer to the gas valve orifice hood. Bleed off
trapped air by inserting a small screwdriver blade briefly
under the connecting tubing. Trapped air could give an
inaccurate reading. Turn on gas valve. Take a full load
reading by turning on all top burners to verify that
pressure under full load is still within specifications.
Gas pressure is measured in WCP by adding the
readings from both tubes. If water level on both legs is at
the two inch mark, this indicates a pressure of 4 inches
WCP that conforms with cooktop specifications as
specified on rating label.
