JP FJH-4/1C-E - Page 28

JP Heater
24
Fault Lock Status Debug Method
Fault Code
Fault Name
Fault Debug Method
32
Combustion failure
a. Check gas supply system
b. Check whether combustion inlet and outlet are blocked
c. Check the flame sensor
33
Flame sensor fault
a. Check the flame sensor lead wire
b. Check the flame sensor
41
Warm air outlet overheats
a. Check whether air outlet is blocked
42
Warm air overheats switch protection.
a. Check whether air outlet is blocked
b. Check warm air overheat switch
43
Water overheat
a. Check whether water depletion in the tank
b. Check if the sensor is in good condition
c. Check whether air outlet is blocked
44
Water overheat switch protection.
a. Check whether air outlet is blocked
b. Check water overheat switch
45
Overheating fault
a. Check whether air outlet is blocked
b. Check water temperature sensor
c. Check warm air sensor
51
Communication fault
a. Check interconnecting cable
71
Gas valve failure
a. Check gas valve coil and lead wire
72
Gas valve power failure
a. Replacement motherboard
81
Combustion support fan disconnection
a. Check combustion air blower
82
Combustion support blower boot failure
a. Check the blower motor lead wire
b. Check combustion air blower