MovinCool Climate Pro 18 Service Manual - Manual (Page 83)

Repair Section
83
9.9 Inspection of Transformer
(1) Transformer for relay board
• Check resistance across the terminals of the
transfomer for the relay board. (All terminals
must be disconnected from the unit.) Primary
resistance value should be between 10 to 50
times larger than the secondary resistance
value.
• If the resistance reading does not meet the
above condition, replace the transformer.
(2) Transformer (optional) for 24VAC thermostat (field supplied)
• Check resistance across the terminals of the
transformer for the 24VAC thermostat. (All
terminals must be disconnected from the unit.)
Primary resistance value should be between
10 to 50 times larger than the secondary
resistance value.
• If the resistance reading does not meet above
condition, replace the transformer.
ILL00879-00
Secondary
20 V
40 VA, 60 Hz
1
5
10
6
4
2
Primary
115 V
ILL00905-00
Secondary
Primary
Connected to
Signal Terminals
(24VAC Neutral,
24VAC Hot)
40 VA, 60 Hz
Connected to
Terminals
(R1, T1)
3
1 0
6
120 V 24 V
3
5 1 0
6