Enviro C-11253, C-11102, 50-1472 Trouble Shooting, Possible Cause, Solution, Spark will not light

Trouble Shooting

Possible Cause

Solution

Spark will not light

Air in the pilot supply line.

• Purge the line or start ignition several times.

the pilot after

No spark at pilot burner

• Check spark gap.

repeatedly pressing

• Check wiring connections to ignitor.

the spark ignitor.

• Check for spark in location along cable.

Valve.

• Replace the valve.

Over tightened

• Replace the valve and thermocouple interrupter.

thermocouple interrupter.

Receiver

• Replace the receiver and reset the receiver’s

code, refer to MAINTENANCE AND SERVICE -

CHANGING REMOTE HANDSET CODE.

Pilot is lit and

Receiver.

• Replace the receiver and reset the receiver’s

control continues

code, refer to MAINTENANCE AND SERVICE -

to spark. Valve

CHANGING REMOTE HANDSET CODE.

shuts off after 10 to

30 seconds. Valve

operates manually.

Pilot

is

lit

and

Not

enough

voltage

• Use a digital multimeter set in the mV range

sparking stops. Valve

generated

from

the

and measure the voltage by touching one test

shuts off after 10 to

thermocouple or too much

lead to the metal body of the valve and the

60

seconds.

Valve

resistance in the circuit.

other lead will go to the spade connector of the

does

not

operate

Note: To find which part of

thermocouple line (see Figure 82). The available

manually.

the

circuit

is

causing

the

voltage must be at least 5mV. Drop time can

be measured after the thermocouple is fully

Note:

For

manual

problem,

a

checklist

for

heated; more than 15 seconds for the drop time

operation

turn

the

each

application

can

be

is good.

valve

knob

to

the

prepared

using an

Excel

manual

position

calculation

available

from

and

hold the

safety

Mertik Maxitrol.

magnet

open

Possible parts are: ON-

with

a

pen

for

OFF

switch,

Temperature

approximately

60

switches,

Thermo

current

seconds (see

Figure

connections, Receiver.

91).

Figure 81: Valve’s

Figure 82: Voltage Across

Safety Magnet.

Valve & Spade.

Thermocouple.

• Replace the thermocouple.

Low inlet pressure.

• Confirm the regulator’s pressure and sizing.

Replace if necessary.

Valve.

• Replace the valve. Do not over tighten the

thermocouple interrupter.

BV Only: Spill switch at

• Correct cause of trip and reset switch.

the draft hood may have

tripped.

39