Right Wrong
Bubble
Correct
Wrong
Right Wrong
Bubble
Correct
Wrong
4
FAULT CODE / TROUBLESHOOTING
16
5. Check fuel supply/measure fuel quantity.
a. Disconnect the fuel line from heater
b. Turn the unit on (remember 60 second delay prior to pump activation)
c. Place the fuel line into the graduated cylinder and allow to run through a rst start attempt.
d. Once fuel pump stops running from rst start attempt turn the unit off.
e. The measured fuel must be between 3.5 to 4.3 milliliters. Refer to page 19.
f. If the reading is high and the pump angle is veried correct, replace the pump, clear the codes, run the unit, and restart troubleshooting.
g. If the reading is low and the pump angle is veried correct, replace inlet screen and retest.
h. Inspect all fuel line connections to see if the lines have a crisp cut on the end. Inspect fuel pick-up pipe for any obstructions.
Figure 17
i. If no fault is found on the inlet line or pick-up pipe operate the fuel quantity test from an external fuel source.
j. If results are still low replace pump.
6. Replace atomizing screen, clean starting air hole (maintenance) and inspect glow pin.
a. If pin visibly deteriorated replace it, clear codes and restart troubleshooting.
7. Check ame sensor resistance, see pages 19 & 23.
8. Remove and inspect the burner chamber (see pictures in the Basic Repair Analysis guide).
a. If burner chamber has carbon build up replace the burner chamber
1. Soft carbon: (non-warranty).
a. Is an indication of over fueling (FMP angle).
b. Restricted exhaust.
c. Restricted intake.
d. Plugged blower wheel.
2. Hard carbon: (non-warranty)
a. Is an indication of too much additives.
b. Heavy concentration of bio-fuel.
c. Short cycle of heater (recommended minimum runtime is 15 minutes).
d. Road debris (reposition combustion air intake to a location not to pick-up debris).
e. Clear codes and run unit.
053 - Flame cutout power/boost mode
054 - Flame cutout in high mode
055 - Flame cutout in medium mode
056 - Flame cutout in low mode
1. Heater has started successfully but the ame has extinguished.
2. Inspect and or replace fuel lter on inlet side of fuel pump, see page 32. (maintenance).
3. Inspect for possible air entry into the suction side of the fuel system.
4. Check fuel supply/measure fuel quantity.
a. Disconnect the fuel line from the heater.
b. Turn the unit on (remember the 60 second delay prior to pump activation).
c. Place the fuel line into the graduated cylinder and allow to run through a rst start attempt.
d. Once the fuel pump stops running from the rst start attempt turn the unit off.
e. The measured fuel must be between 3.5 to 4.3 milliliters. Refer to page 19.
f. If the reading is high and the pump angle is veried correct (15-35), replace the pump, clear the codes, run the unit, and restart troubleshooting.
g. If the reading is low and the pump angle is veried correct, replace inlet screen and retest.
h. Inspect all fuel line connections to see if the lines have a crisp cut on the end (Figure 13). Inspect fuel pick-up pipe for any obstructions.
Figure 17
i. If not fault is found on the inlet line and pick-up pipe operate the fuel quantity test from an external fuel source.
REVISION LEVEL A - 09/09/15
To Next Page
Loading...