Beta Marine Beta 10 Operator's Maintenance Manual page 55

ELECTRICAL FAULT FINDING - C DELUXE AND B PANELS
In addition to the fault finding detailed on the previous table, the following is specific for the deluxe panel (Also
applicable for the B panel with Murphy water temperature gauge)
Problem
Oil pressure warning lamp not functioning, oil pressure
gauge showing maximum deflection. Engine off and
keyswitch in run position
Oil pressure gauge showing no movement - even when
engine is started. Warning lamp functioning correctly
Oil pressure showing no movement,
warning lamp not functioning correctly
Oil pressure showing normal operating pressure
(0.75 - 5 bar). Buzzer sounding and lamp illuminated.
Water temperature gauge showing 120°C / 250°F.
This also applies to the B Panel with Murphy gauge
Water temperature gauge showing normal operating
temperature (85°C). Buzzer sounding and lamp illuminated. • Incorrectly calibrated switching point for warning
This also applies to the B Panel with Murphy gauge
Water temperature gauge showing no movement,
lamp not illuminated, engine warm.
This also applies to the B Panel with Murphy gauge
Possible Cause and Solution
• Faulty wiring - check wire connection and continuity
(small white/brown) from sender to panel lamp.
Ensure this connection is not shorting to earth
(ground)
• Faulty wiring - check oil pressure sender wire
(small white/brown) is connected
• Check connection to oil pressure gauge, if plug is
not connected to socket on rear of gauge, reconnect
• If all connections are correctly made, possible faulty
sender unit - check resistance to earth, approx.
50 Ω. Replace if no reading or short-circuited
• If adjusted correctly and buzzer still sounding,
possible faulty switch gauge unit - replace
Engine warm:
• Incorrectly calibrated switching point for warning
lamp, adjust on rear of gauge to 0.5 bar (minimum
adjustment on gauge)
• If adjusted correctly and buzzer still sounding,
faulty switch gauge unit - replace
Engine cold / cool:
• Faulty wiring, check water temperature sender
wire is not shorting to earth (ground)
• Faulty sender unit, - check resistance to earth,
approx. 3.5k Ω (cold) – 0.5k Ω (warm). Replace
if notably less
Engine warm:
lamp adjust on rear of gauge to 100°C / 210°F.
• If adjusted correctly and buzzer still sounding,
faulty switch gauge unit - replace
• Check connection to sender, if disconnected gauge
will not function
• Check connection to temperature gauge, if plug is
not connected to socket on rear of gauge reconnect.
If all connections are correctly made, faulty sender
unit - check resistance to earth, approx. 3.5k Ω
(cold) - 0.5k Ω (warm). Replace if no reading
53