mabe PSS21 Series, Service Manual

Page: 31 / 65

Diagnostic
Content
Efficient use of the
Diagnostic……………………………………………………………………………………….29
Causes of failure (Table 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Automatic diagnostics
……………………………………………………………………………………………………… 30
Diagnostic Tests (Table 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
…………. . . . 32
Communication Tests (0 2, 03 or 0 4)
……………………………………………………………………………………32
Self-Test Temperature Control Panel (0 6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
………………… . . . . . 32
Dispenser Board
……………………………………………………………………………………………………………33
Self-Test of the Control and Sensor System (0 7)
………………………………………………………………………. 33
Main Control Board (Low Voltage Side)
…………………………………………………………………………………… 34
Main Control Board (Side 120-VAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
………….. . . . . . . . . . . . . . . . . . . . 35
Table Locator Board of C.o.n.tr.o.l.P.r.in.c.ip. to. l (.L.a.d.o. D. E.B.a.jo.V.o.l.ta.je.)
………………………………….36
Table Locator Main Control Board (Side 120-VAC)
………………………………………………………………………38
Dead Unit, No Sound and No Cool (diagnostic chart)
……………………………………………………………………. 39
Warming Cooler - Warm Freezer (diagnostic board)
……………………………………………………………………… 40
Warming Cooler - No
rmal Freezer (diagnostic table) ……….. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Very Cold Cooler - Normal Freezer (diagnostic table)
…………………………………………………………………….. 42
Warm Freezer - Normal Cooler (diagnostic table)
…………………………………………………………………………. 43
Compressor Does Not Work (diagnostic chart). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
……… . . . . . . . . . . . 44
Shock Absorber Door Does Not Open or Close (diagnostic chart)
………………………………………………………..45
Condenser Fan Does Not Work (Diagnosis Box)
…………………………………………………………………………… 46
Evaporator Fan Does Not Work (Diagnosis Box)
…………………………………………………………………………….47
Cooler Fan Does Not Work (Diagnosis Box)
………………………………………………………………………………… 48
A lot of Frost in the Evaporator (diagnostic table)
…………………………………………………………………………….49
Thermistor test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
……………………………………… . . . . . . . . . 50
Thermistor values (table 3)
Efficient Use of the Diagnostic. . . . . . . . . . . .
…………. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51