WATER HEATER DOES NOT HEAT WATER.
Step 1. 24 vdc is not available from pump unit(l).
Turn pump unit HEATER RECEPTA-
CLE AND SWITCH to ON (2).
Step 2. Check output of alternator for at least
24 vdc at HEATER RECEPTACLE AND
SWITCH, center pin to ground.
If less than 24 vdc is present, replace
alternator or notify intermediate direct
support maintenance.
Step 3. Check for 24 vdc from K1-A2 in
the heater control box to ground.
If 24 vdc is not present,
replace power cable
assembly.
TM 3-4230-209-20&P
2-23