TM 9-2540-205-24&P
TROUBLESHOOTING-CONTINUED
ESPAR V7S - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
7. TEMPERATURE OF OUTPUT HEATING AIR TOO HIGH
Step 1.
Step 2.
Step 3.
Step 4.
Check switchbox for damaged temperature selector switch (refer to applicable vehicle
technical manuals).
Check for defective temperature sensor (step 3, malfunction 3, page 3-140).
Replace impulse switch (page 3-1 81).
Replace circulating pump (page 3-1 74).
If temperature of output heating air is still too high, replace heater.
8. HEATER EMITS SOOT AND HEAVY SMOKE
Step 1. Check for proper voltage requirements (step 1, malfunction 1, page 3-18).
Step 2. Check for blocked combustion air inlet or exhaust pipe.
Clear all passages to and from heater (refer to applicable vehicle technical
manuals).
Step 3. Check for defective solenoid valve (1) as follows:
a.
b.
Remove solenoid valve (1) (page 3-1 52).
Apply battery voltage to terminals of solenoid valve(1).
1. If solenoid valve (1) opens, install (page 3-152).
2. If solenoid valve (1) does not open, replace (page 3-152).
ROTATED 90°
3-23
