6
figures whether pre-heating settings are set or not
See following Fig.7-8
：
ON
O F F
Fig.7
：
Pre-heat On
图
8
：
Pre-heat Off
Pre-heating is set when the spa is in the
“Power off” status and the LCD display shows
“
---
”
1
）
Set preheating
2
）
Time setting for Preheating
3
）
Continual time of preheating
4
）
Preset temperature
5
）
Finished
Summary of Contents for SPA-520
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