SERVICE MANUAL
Medi-Therm II
w
w
w
.g
aymar
.com P/N 10187-000 7/98
TROUBLESHOOTING CHARTS
Refrigeration
system
faulty
Is a steel object
attracted to center top of
the valve?
*
**
No
Ye
s
Connect test setup
as shown in figure
13 (but don
’t use
the blanket).
No
No
Ye
s
Is
blanket display
within 1.8°F (1°C)
of setpoint
?
If thermometer
in TPT9
contradicts this,
suspect RT2.
Select MANUAL mode.
Adjust setpoint to
4°C (39.2°F).
Allow machine time
to cool.
(30 min. max.)
Ye
s
No
Ye
s
Ye
s
Is reservoir
temperature
42.8°F (6°C) or
below?
See
"CHECK WA
TER
FLOW alert is on"
(figure 6I)
See
"PUMP MOTOR
NOT RUNNING"
(figure 6J)
Dirty or restricted
refrigeration
condenser
Refrigeration unit
may have lost
its charge
No
Repair/replace
cold solenoid
SV1.
No
Ye
s
Ye
s
No
No
Check
hot solenoid SV2.
(it should be off).
Is SV1 coil
energized?
Is
there
adequate
flow
?
Is
pump
running
?
Check pump
(it should be
running)
Ye
s
Check heater
(it should be off)
Line
voltage at
terminals 2
TB1?
Will reservoir
temperature reach
42.8°F (6°C) or
below?
Is
compressor
on?
BLANKET WILL
NOT COOL
See
"BLANKET WILL
NOT COOL"
(figure 6L,
page 3 of 3)
and 3 of
Figure 6L—Blanket Will Not Cool, Page 1 of 3
54
