2.SYSB malfunction Table
The common failure cause and solution.
System 2 ec onomize r
outlet te mp.fail ure
System 1 an ti-free ze protec tion
System 2 an ti-free ze protec tion
Malfunction
Ambient t emp.sen sor failu re
Communi cation fa ilure
System 1 ex haust tem p.failu re
System 2 ex haust tem p.failu re
System 1 an ti-free ze temp.f ailure
System 2 an ti-free ze temp.f ailure
System 1 ec onomize r
inlet tem p.failu re
System 2 ec onomize r
inlet tem p.failu re
System 1 ec onomize r
outlet te mp.fail ure
P202
P29
Display
P04
E08
P181
P281
E171
E271
P101
P201
P102
Wat er flow vol ume not eno ugh
Canse
Communi cation fa ilure bet ween
remote wi re contro ller and ma in board
The senso r is open or sh ort circu it
Solution
Check the w ire conne ction bet ween
remote wi re contro ller and ma in board
Check or ch ange the se nsor
Check the f low volum e,water
system is j ammed or no t
System 1 cu rrent pro tection
E151
Current t hrough co mpresso r too heavy
Check thr ough the po wer suppl y for
compres sor or shor t circuit
E251
Current t hrough co mpresso r too heavy
Wat er flow vol ume not eno ugh
Check the f low volum e,water
system is j ammed or no t
The senso r is open or sh ort circu it
Check or ch ange the se nsor
The senso r is open or sh ort circu it
Check or ch ange the se nsor
The senso r is open or sh ort circu it
Check or ch ange the se nsor
The senso r is open or sh ort circu it
Check or ch ange the se nsor
The senso r is open or sh ort circu it
Check or ch ange the se nsor
The senso r is open or sh ort circu it
Check or ch ange the se nsor
The senso r is open or sh ort circu it
Check or ch ange the se nsor
The senso r is open or sh ort circu it
Check or ch ange the se nsor
System 2 cu rrent pro tection
Check thr ough the po wer suppl y for
compres sor or shor t circuit
P19
P182
Compres sor exhau st temp.t oo high
System 1 ex haust hig h
temp.pr otectio n
Check thr ough the re frigera nt system
P282
System 2 ex haust hig h
temp.pr otectio n
Compres sor exhau st temp.t oo high Check thr ough the re frigera nt system
Appendix
27